diff --git a/.travis.yml b/.travis.yml
index 10eefc9..efcc81c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,8 @@
 language: go
 go:
- - 1.11
- - 1.12
+ - 1.13
+ - 1.14
+ - 1.15
 install:
  - export PATH=$PATH:$HOME/gopath/bin
 script:
diff --git a/README.md b/README.md
index d817fdc..6e074f1 100644
--- a/README.md
+++ b/README.md
@@ -82,14 +82,14 @@ It is possible that some endpoints are missing in this SDK Client, but you can u
 
 ```go
 // If using Go Modules
-// import "github.com/plutov/paypal/v3" 
+// import "github.com/plutov/paypal/v4" 
 import "github.com/plutov/paypal"
 
 // Create a client instance
 c, err := paypal.NewClient("clientID", "secretID", paypal.APIBaseSandBox)
 c.SetLog(os.Stdout) // Set log to terminal stdout
 
-accessToken, err := c.GetAccessToken()
+accessToken, err := c.GetAccessToken(context.Background())
 ```
 
 ### How to Contribute
diff --git a/authorization.go b/authorization.go
index 5fc4237..b2481d2 100644
--- a/authorization.go
+++ b/authorization.go
@@ -2,15 +2,16 @@ package paypal
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"net/http"
 )
 
 // GetAuthorization returns an authorization by ID
 // Endpoint: GET /v2/payments/authorizations/ID
-func (c *Client) GetAuthorization(authID string) (*Authorization, error) {
+func (c *Client) GetAuthorization(ctx context.Context, authID string) (*Authorization, error) {
 	buf := bytes.NewBuffer([]byte(""))
-	req, err := http.NewRequest("GET", fmt.Sprintf("%s%s%s", c.APIBase, "/v2/payments/authorizations/", authID), buf)
+	req, err := http.NewRequestWithContext(ctx, "GET", fmt.Sprintf("%s%s%s", c.APIBase, "/v2/payments/authorizations/", authID), buf)
 	auth := &Authorization{}
 
 	if err != nil {
@@ -24,19 +25,19 @@ func (c *Client) GetAuthorization(authID string) (*Authorization, error) {
 // CaptureAuthorization captures and process an existing authorization.
 // To use this method, the original payment must have Intent set to "authorize"
 // Endpoint: POST /v2/payments/authorizations/ID/capture
-func (c *Client) CaptureAuthorization(authID string, paymentCaptureRequest *PaymentCaptureRequest) (*PaymentCaptureResponse, error) {
-	return c.CaptureAuthorizationWithPaypalRequestId(authID, paymentCaptureRequest, "")
+func (c *Client) CaptureAuthorization(ctx context.Context, authID string, paymentCaptureRequest *PaymentCaptureRequest) (*PaymentCaptureResponse, error) {
+	return c.CaptureAuthorizationWithPaypalRequestId(ctx, authID, paymentCaptureRequest, "")
 }
 
 // CaptureAuthorization captures and process an existing authorization with idempotency.
 // To use this method, the original payment must have Intent set to "authorize"
 // Endpoint: POST /v2/payments/authorizations/ID/capture
-func (c *Client) CaptureAuthorizationWithPaypalRequestId(
+func (c *Client) CaptureAuthorizationWithPaypalRequestId(ctx context.Context,
 	authID string,
 	paymentCaptureRequest *PaymentCaptureRequest,
 	requestID string,
 ) (*PaymentCaptureResponse, error) {
-	req, err := c.NewRequest("POST", fmt.Sprintf("%s%s", c.APIBase, "/v2/payments/authorizations/"+authID+"/capture"), paymentCaptureRequest)
+	req, err := c.NewRequest(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v2/payments/authorizations/"+authID+"/capture"), paymentCaptureRequest)
 	paymentCaptureResponse := &PaymentCaptureResponse{}
 
 	if err != nil {
@@ -53,9 +54,9 @@ func (c *Client) CaptureAuthorizationWithPaypalRequestId(
 
 // VoidAuthorization voids a previously authorized payment
 // Endpoint: POST /v2/payments/authorizations/ID/void
-func (c *Client) VoidAuthorization(authID string) (*Authorization, error) {
+func (c *Client) VoidAuthorization(ctx context.Context, authID string) (*Authorization, error) {
 	buf := bytes.NewBuffer([]byte(""))
-	req, err := http.NewRequest("POST", fmt.Sprintf("%s%s", c.APIBase, "/v2/payments/authorizations/"+authID+"/void"), buf)
+	req, err := http.NewRequestWithContext(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v2/payments/authorizations/"+authID+"/void"), buf)
 	auth := &Authorization{}
 
 	if err != nil {
@@ -69,9 +70,9 @@ func (c *Client) VoidAuthorization(authID string) (*Authorization, error) {
 // ReauthorizeAuthorization reauthorize a Paypal account payment.
 // PayPal recommends to reauthorize payment after ~3 days
 // Endpoint: POST /v2/payments/authorizations/ID/reauthorize
-func (c *Client) ReauthorizeAuthorization(authID string, a *Amount) (*Authorization, error) {
+func (c *Client) ReauthorizeAuthorization(ctx context.Context, authID string, a *Amount) (*Authorization, error) {
 	buf := bytes.NewBuffer([]byte(`{"amount":{"currency":"` + a.Currency + `","total":"` + a.Total + `"}}`))
-	req, err := http.NewRequest("POST", fmt.Sprintf("%s%s", c.APIBase, "/v2/payments/authorizations/"+authID+"/reauthorize"), buf)
+	req, err := http.NewRequestWithContext(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v2/payments/authorizations/"+authID+"/reauthorize"), buf)
 	auth := &Authorization{}
 
 	if err != nil {
diff --git a/billing.go b/billing.go
index b0f63f2..9e5de73 100644
--- a/billing.go
+++ b/billing.go
@@ -1,6 +1,7 @@
 package paypal
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"net/http"
@@ -8,8 +9,8 @@ import (
 )
 
 type (
-	// CreateBillingResp struct
-	CreateBillingResp struct {
+	// CreateBillingResponse struct
+	CreateBillingResponse struct {
 		ID                  string              `json:"id,omitempty"`
 		State               string              `json:"state,omitempty"`
 		PaymentDefinitions  []PaymentDefinition `json:"payment_definitions,omitempty"`
@@ -19,33 +20,42 @@ type (
 		Links               []Link              `json:"links,omitempty"`
 	}
 
-	// CreateAgreementResp struct
-	CreateAgreementResp struct {
+	// CreateBillingResp deprecated, use CreateBillingResponse instead.
+	CreateBillingResp = CreateBillingResponse
+
+	// CreateAgreementResponse struct
+	CreateAgreementResponse struct {
 		Name        string      `json:"name,omitempty"`
 		Description string      `json:"description,omitempty"`
-		Plan        BillingPlan `json:"plan,omitempty"`
+	 	Plan        BillingPlan `json:"plan,omitempty"`
 		Links       []Link      `json:"links,omitempty"`
 		StartTime   time.Time   `json:"start_time,omitempty"`
 	}
 
+	// CreateAgreementResp is deprecated, use CreateAgreementResponse instead.
+	CreateAgreementResp =  CreateAgreementResponse
+
 	// BillingPlanListParams struct
 	BillingPlanListParams struct {
 		ListParams
 		Status string `json:"status,omitempty"` //Allowed values: CREATED, ACTIVE, INACTIVE, ALL.
 	}
 
-	//BillingPlanListResp struct
-	BillingPlanListResp struct {
+	//BillingPlanListResponse struct
+	BillingPlanListResponse struct {
 		SharedListResponse
 		Plans []BillingPlan `json:"plans,omitempty"`
 	}
+
+	// BillingPlanListResp is deprecated, use BillingPlanListResponse instead.
+	BillingPlanListResp = BillingPlanListResponse
 )
 
 // CreateBillingPlan creates a billing plan in Paypal
 // Endpoint: POST /v1/payments/billing-plans
-func (c *Client) CreateBillingPlan(plan BillingPlan) (*CreateBillingResp, error) {
-	req, err := c.NewRequest(http.MethodPost, fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/billing-plans"), plan)
-	response := &CreateBillingResp{}
+func (c *Client) CreateBillingPlan(ctx context.Context, plan BillingPlan) (*CreateBillingResponse, error) {
+	req, err := c.NewRequest(ctx, http.MethodPost, fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/billing-plans"), plan)
+	response := &CreateBillingResponse{}
 	if err != nil {
 		return response, err
 	}
@@ -55,7 +65,7 @@ func (c *Client) CreateBillingPlan(plan BillingPlan) (*CreateBillingResp, error)
 
 // UpdateBillingPlan updates values inside a billing plan
 // Endpoint: PATCH /v1/payments/billing-plans
-func (c *Client) UpdateBillingPlan(planId string, pathValues map[string]map[string]interface{}) error {
+func (c *Client) UpdateBillingPlan(ctx context.Context, planId string, pathValues map[string]map[string]interface{}) error {
 	patchData := []Patch{}
 	for path, data := range pathValues {
 		patchData = append(patchData, Patch{
@@ -64,8 +74,8 @@ func (c *Client) UpdateBillingPlan(planId string, pathValues map[string]map[stri
 			Value:     data,
 		})
 	}
-	
-	req, err := c.NewRequest(http.MethodPatch, fmt.Sprintf("%s%s%s", c.APIBase, "/v1/payments/billing-plans/", planId), patchData)
+
+	req, err := c.NewRequest(ctx, http.MethodPatch, fmt.Sprintf("%s%s%s", c.APIBase, "/v1/payments/billing-plans/", planId), patchData)
 	if err != nil {
 		return err
 	}
@@ -76,22 +86,22 @@ func (c *Client) UpdateBillingPlan(planId string, pathValues map[string]map[stri
 // ActivatePlan activates a billing plan
 // By default, a new plan is not activated
 // Endpoint: PATCH /v1/payments/billing-plans/
-func (c *Client) ActivatePlan(planID string) error {
-	return c.UpdateBillingPlan(planID, map[string]map[string]interface{}{
+func (c *Client) ActivatePlan(ctx context.Context, planID string) error {
+	return c.UpdateBillingPlan(ctx, planID, map[string]map[string]interface{}{
 		"/": {"state": BillingPlanStatusActive},
 	})
 }
 
 // CreateBillingAgreement creates an agreement for specified plan
 // Endpoint: POST /v1/payments/billing-agreements
-func (c *Client) CreateBillingAgreement(a BillingAgreement) (*CreateAgreementResp, error) {
+func (c *Client) CreateBillingAgreement(ctx context.Context, a BillingAgreement) (*CreateAgreementResponse, error) {
 	// PayPal needs only ID, so we will remove all fields except Plan ID
 	a.Plan = BillingPlan{
 		ID: a.Plan.ID,
 	}
 
-	req, err := c.NewRequest(http.MethodPost, fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/billing-agreements"), a)
-	response := &CreateAgreementResp{}
+	req, err := c.NewRequest(ctx, http.MethodPost, fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/billing-agreements"), a)
+	response := &CreateAgreementResponse{}
 	if err != nil {
 		return response, err
 	}
@@ -101,8 +111,8 @@ func (c *Client) CreateBillingAgreement(a BillingAgreement) (*CreateAgreementRes
 
 // ExecuteApprovedAgreement - Use this call to execute (complete) a PayPal agreement that has been approved by the payer.
 // Endpoint: POST /v1/payments/billing-agreements/token/agreement-execute
-func (c *Client) ExecuteApprovedAgreement(token string) (*ExecuteAgreementResponse, error) {
-	req, err := http.NewRequest(http.MethodPost, fmt.Sprintf("%s/v1/payments/billing-agreements/%s/agreement-execute", c.APIBase, token), nil)
+func (c *Client) ExecuteApprovedAgreement(ctx context.Context, token string) (*ExecuteAgreementResponse, error) {
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, fmt.Sprintf("%s/v1/payments/billing-agreements/%s/agreement-execute", c.APIBase, token), nil)
 	response := &ExecuteAgreementResponse{}
 
 	if err != nil {
@@ -125,9 +135,9 @@ func (c *Client) ExecuteApprovedAgreement(token string) (*ExecuteAgreementRespon
 
 // ListBillingPlans lists billing-plans
 // Endpoint: GET /v1/payments/billing-plans
-func (c *Client) ListBillingPlans(bplp BillingPlanListParams) (*BillingPlanListResp, error) {
-	req, err := c.NewRequest("GET", fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/billing-plans"), nil)
-	response := &BillingPlanListResp{}
+func (c *Client) ListBillingPlans(ctx context.Context, bplp BillingPlanListParams) (*BillingPlanListResponse, error) {
+	req, err := c.NewRequest(ctx, "GET", fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/billing-plans"), nil)
+	response := &BillingPlanListResponse{}
 	if err != nil {
 		return response, err
 	}
diff --git a/client.go b/client.go
index 6fe98c6..de20087 100644
--- a/client.go
+++ b/client.go
@@ -2,6 +2,7 @@ package paypal
 
 import (
 	"bytes"
+	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -30,9 +31,9 @@ func NewClient(clientID string, secret string, APIBase string) (*Client, error)
 // GetAccessToken returns struct of TokenResponse
 // No need to call SetAccessToken to apply new access token for current Client
 // Endpoint: POST /v1/oauth2/token
-func (c *Client) GetAccessToken() (*TokenResponse, error) {
+func (c *Client) GetAccessToken(ctx context.Context) (*TokenResponse, error) {
 	buf := bytes.NewBuffer([]byte("grant_type=client_credentials"))
-	req, err := http.NewRequest("POST", fmt.Sprintf("%s%s", c.APIBase, "/v1/oauth2/token"), buf)
+	req, err := http.NewRequestWithContext(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v1/oauth2/token"), buf)
 	if err != nil {
 		return &TokenResponse{}, err
 	}
@@ -140,7 +141,7 @@ func (c *Client) SendWithAuth(req *http.Request, v interface{}) error {
 	if c.Token != nil {
 		if !c.tokenExpiresAt.IsZero() && c.tokenExpiresAt.Sub(time.Now()) < RequestNewTokenBeforeExpiresIn {
 			// c.Token will be updated in GetAccessToken call
-			if _, err := c.GetAccessToken(); err != nil {
+			if _, err := c.GetAccessToken(req.Context()); err != nil {
 				c.Unlock()
 				return err
 			}
@@ -164,7 +165,7 @@ func (c *Client) SendWithBasicAuth(req *http.Request, v interface{}) error {
 
 // NewRequest constructs a request
 // Convert payload to a JSON
-func (c *Client) NewRequest(method, url string, payload interface{}) (*http.Request, error) {
+func (c *Client) NewRequest(ctx context.Context, method, url string, payload interface{}) (*http.Request, error) {
 	var buf io.Reader
 	if payload != nil {
 		b, err := json.Marshal(&payload)
@@ -173,7 +174,7 @@ func (c *Client) NewRequest(method, url string, payload interface{}) (*http.Requ
 		}
 		buf = bytes.NewBuffer(b)
 	}
-	return http.NewRequest(method, url, buf)
+	return http.NewRequestWithContext(ctx, method, url, buf)
 }
 
 // log will dump request and response to the log file
diff --git a/example_test.go b/example_test.go
index e2ac2ff..99eda77 100644
--- a/example_test.go
+++ b/example_test.go
@@ -1,6 +1,10 @@
 package paypal_test
 
-import "github.com/plutov/paypal/v3"
+import (
+	"context"
+
+	"github.com/plutov/paypal/v4"
+)
 
 func Example() {
 	// Initialize client
@@ -10,13 +14,13 @@ func Example() {
 	}
 
 	// Retrieve access token
-	_, err = c.GetAccessToken()
+	_, err = c.GetAccessToken(context.Background())
 	if err != nil {
 		panic(err)
 	}
 }
 
-func ExampleClient_CreateSinglePayout_Venmo() {
+func ExampleClient_CreatePayout_Venmo() {
 	// Initialize client
 	c, err := paypal.NewClient("clientID", "secretID", paypal.APIBaseSandBox)
 	if err != nil {
@@ -24,7 +28,7 @@ func ExampleClient_CreateSinglePayout_Venmo() {
 	}
 
 	// Retrieve access token
-	_, err = c.GetAccessToken()
+	_, err = c.GetAccessToken(context.Background())
 	if err != nil {
 		panic(err)
 	}
@@ -51,5 +55,5 @@ func ExampleClient_CreateSinglePayout_Venmo() {
 		},
 	}
 
-	c.CreateSinglePayout(payout)
+	c.CreatePayout(context.Background(), payout)
 }
diff --git a/go.mod b/go.mod
index 13768d3..e025f4e 100644
--- a/go.mod
+++ b/go.mod
@@ -1,5 +1,5 @@
-module github.com/plutov/paypal/v3
+module github.com/plutov/paypal/v4
 
-go 1.12
+go 1.13
 
 require github.com/stretchr/testify v1.6.0
diff --git a/identity.go b/identity.go
index 4a7b495..e94a646 100644
--- a/identity.go
+++ b/identity.go
@@ -1,6 +1,7 @@
 package paypal
 
 import (
+	"context"
 	"fmt"
 	"net/http"
 	"net/url"
@@ -9,7 +10,7 @@ import (
 
 // GrantNewAccessTokenFromAuthCode - Use this call to grant a new access token, using the previously obtained authorization code.
 // Endpoint: POST /v1/identity/openidconnect/tokenservice
-func (c *Client) GrantNewAccessTokenFromAuthCode(code, redirectURI string) (*TokenResponse, error) {
+func (c *Client) GrantNewAccessTokenFromAuthCode(ctx context.Context, code, redirectURI string) (*TokenResponse, error) {
 	token := &TokenResponse{}
 
 	q := url.Values{}
@@ -17,7 +18,7 @@ func (c *Client) GrantNewAccessTokenFromAuthCode(code, redirectURI string) (*Tok
 	q.Set("code", code)
 	q.Set("redirect_uri", redirectURI)
 
-	req, err := http.NewRequest("POST", fmt.Sprintf("%s%s", c.APIBase, "/v1/identity/openidconnect/tokenservice"), strings.NewReader(q.Encode()))
+	req, err := http.NewRequestWithContext(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v1/identity/openidconnect/tokenservice"), strings.NewReader(q.Encode()))
 	if err != nil {
 		return token, err
 	}
@@ -33,7 +34,7 @@ func (c *Client) GrantNewAccessTokenFromAuthCode(code, redirectURI string) (*Tok
 
 // GrantNewAccessTokenFromRefreshToken - Use this call to grant a new access token, using a refresh token.
 // Endpoint: POST /v1/identity/openidconnect/tokenservice
-func (c *Client) GrantNewAccessTokenFromRefreshToken(refreshToken string) (*TokenResponse, error) {
+func (c *Client) GrantNewAccessTokenFromRefreshToken(ctx context.Context, refreshToken string) (*TokenResponse, error) {
 	type request struct {
 		GrantType    string `json:"grant_type"`
 		RefreshToken string `json:"refresh_token"`
@@ -41,7 +42,7 @@ func (c *Client) GrantNewAccessTokenFromRefreshToken(refreshToken string) (*Toke
 
 	token := &TokenResponse{}
 
-	req, err := c.NewRequest("POST", fmt.Sprintf("%s%s", c.APIBase, "/v1/identity/openidconnect/tokenservice"), request{GrantType: "refresh_token", RefreshToken: refreshToken})
+	req, err := c.NewRequest(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v1/identity/openidconnect/tokenservice"), request{GrantType: "refresh_token", RefreshToken: refreshToken})
 	if err != nil {
 		return token, err
 	}
@@ -56,10 +57,10 @@ func (c *Client) GrantNewAccessTokenFromRefreshToken(refreshToken string) (*Toke
 // GetUserInfo - Use this call to retrieve user profile attributes.
 // Endpoint: GET /v1/identity/openidconnect/userinfo/?schema=<Schema>
 // Pass the schema that is used to return as per openidconnect protocol. The only supported schema value is openid.
-func (c *Client) GetUserInfo(schema string) (*UserInfo, error) {
+func (c *Client) GetUserInfo(ctx context.Context, schema string) (*UserInfo, error) {
 	u := &UserInfo{}
 
-	req, err := http.NewRequest("GET", fmt.Sprintf("%s%s%s", c.APIBase, "/v1/identity/openidconnect/userinfo/?schema=", schema), nil)
+	req, err := http.NewRequestWithContext(ctx, "GET", fmt.Sprintf("%s%s%s", c.APIBase, "/v1/identity/openidconnect/userinfo/?schema=", schema), nil)
 	if err != nil {
 		return u, err
 	}
diff --git a/integration_test.go b/integration_test.go
index 9e3abe9..afd1960 100644
--- a/integration_test.go
+++ b/integration_test.go
@@ -3,6 +3,7 @@
 package paypal
 
 import (
+	"context"
 	"testing"
 	"time"
 
@@ -20,7 +21,7 @@ var testBillingPlan = "" // will be fetched in  func TestSubscriptionPlans(t *te
 
 func TestGetAccessToken(t *testing.T) {
 	c, _ := NewClient(testClientID, testSecret, APIBaseSandBox)
-	token, err := c.GetAccessToken()
+	token, err := c.GetAccessToken(context.Background())
 	if err != nil {
 		t.Errorf("Not expected error for GetAccessToken(), got %s", err.Error())
 	}
@@ -31,9 +32,9 @@ func TestGetAccessToken(t *testing.T) {
 
 func TestGetUserInfo(t *testing.T) {
 	c, _ := NewClient(testClientID, testSecret, APIBaseSandBox)
-	c.GetAccessToken()
+	c.GetAccessToken(context.Background())
 
-	u, err := c.GetUserInfo("openid")
+	u, err := c.GetUserInfo(context.Background(), "openid")
 	if u.ID != testUserID || err != nil {
 		t.Errorf("GetUserInfo must return valid test ID %s, got %s, error: %v", testUserID, u.ID, err)
 	}
@@ -41,7 +42,7 @@ func TestGetUserInfo(t *testing.T) {
 
 func TestCreateVenmoPayout(t *testing.T) {
 	c, _ := NewClient(testClientID, testSecret, APIBaseSandBox)
-	c.GetAccessToken()
+	c.GetAccessToken(context.Background())
 
 	payout := Payout{
 		SenderBatchHeader: &SenderBatchHeader{
@@ -64,14 +65,14 @@ func TestCreateVenmoPayout(t *testing.T) {
 		},
 	}
 
-	res, err := c.CreateSinglePayout(payout)
+	res, err := c.CreatePayout(context.Background(), payout)
 	assert.NoError(t, err, "should accept venmo wallet")
 	assert.Greater(t, len(res.Items), 0)
 }
 
-func TestCreateSinglePayout(t *testing.T) {
+func TestCreatePayout(t *testing.T) {
 	c, _ := NewClient(testClientID, testSecret, APIBaseSandBox)
-	c.GetAccessToken()
+	c.GetAccessToken(context.Background())
 
 	payout := Payout{
 		SenderBatchHeader: &SenderBatchHeader{
@@ -93,19 +94,19 @@ func TestCreateSinglePayout(t *testing.T) {
 		},
 	}
 
-	c.CreateSinglePayout(payout)
+	c.CreatePayout(context.Background(), payout)
 }
 
 func TestStoreCreditCard(t *testing.T) {
 	c, _ := NewClient(testClientID, testSecret, APIBaseSandBox)
-	c.GetAccessToken()
+	c.GetAccessToken(context.Background())
 
-	r1, e1 := c.StoreCreditCard(CreditCard{})
+	r1, e1 := c.StoreCreditCard(context.Background(), CreditCard{})
 	if e1 == nil || r1 != nil {
 		t.Errorf("Error is expected for invalid CC")
 	}
 
-	r2, e2 := c.StoreCreditCard(CreditCard{
+	r2, e2 := c.StoreCreditCard(context.Background(), CreditCard{
 		Number:      "4417119669820331",
 		Type:        "visa",
 		ExpireMonth: "11",
@@ -121,9 +122,9 @@ func TestStoreCreditCard(t *testing.T) {
 
 func TestDeleteCreditCard(t *testing.T) {
 	c, _ := NewClient(testClientID, testSecret, APIBaseSandBox)
-	c.GetAccessToken()
+	c.GetAccessToken(context.Background())
 
-	e1 := c.DeleteCreditCard("")
+	e1 := c.DeleteCreditCard(context.Background(), "")
 	if e1 == nil {
 		t.Errorf("Error is expected for invalid CC ID")
 	}
@@ -131,9 +132,9 @@ func TestDeleteCreditCard(t *testing.T) {
 
 func TestGetCreditCard(t *testing.T) {
 	c, _ := NewClient(testClientID, testSecret, APIBaseSandBox)
-	c.GetAccessToken()
+	c.GetAccessToken(context.Background())
 
-	r1, e1 := c.GetCreditCard("BBGGG")
+	r1, e1 := c.GetCreditCard(context.Background(), "BBGGG")
 	if e1 == nil || r1 != nil {
 		t.Errorf("Error is expected for invalid CC, got CC %v", r1)
 	}
@@ -141,14 +142,14 @@ func TestGetCreditCard(t *testing.T) {
 
 func TestGetCreditCards(t *testing.T) {
 	c, _ := NewClient(testClientID, testSecret, APIBaseSandBox)
-	c.GetAccessToken()
+	c.GetAccessToken(context.Background())
 
-	r1, e1 := c.GetCreditCards(nil)
+	r1, e1 := c.GetCreditCards(context.Background(), nil)
 	if e1 != nil || r1 == nil {
 		t.Errorf("200 code expected. Error: %v", e1)
 	}
 
-	r2, e2 := c.GetCreditCards(&CreditCardsFilter{
+	r2, e2 := c.GetCreditCards(context.Background(), &CreditCardsFilter{
 		Page:     2,
 		PageSize: 7,
 	})
@@ -159,9 +160,9 @@ func TestGetCreditCards(t *testing.T) {
 
 func TestPatchCreditCard(t *testing.T) {
 	c, _ := NewClient(testClientID, testSecret, APIBaseSandBox)
-	c.GetAccessToken()
+	c.GetAccessToken(context.Background())
 
-	r1, e1 := c.PatchCreditCard(testCardID, nil)
+	r1, e1 := c.PatchCreditCard(context.Background(), testCardID, nil)
 	if e1 == nil || r1 != nil {
 		t.Errorf("Error is expected for empty update info")
 	}
@@ -170,7 +171,7 @@ func TestPatchCreditCard(t *testing.T) {
 // Creates, gets, and deletes single webhook
 func TestCreateAndGetWebhook(t *testing.T) {
 	c, _ := NewClient(testClientID, testSecret, APIBaseSandBox)
-	c.GetAccessToken()
+	c.GetAccessToken(context.Background())
 
 	payload := &CreateWebhookRequest{
 		URL: "https://example.com/paypal_webhooks",
@@ -181,17 +182,17 @@ func TestCreateAndGetWebhook(t *testing.T) {
 		},
 	}
 
-	createdWebhook, err := c.CreateWebhook(payload)
+	createdWebhook, err := c.CreateWebhook(context.Background(), payload)
 	if err != nil {
 		t.Errorf("Webhook couldn't be created, error %v", err)
 	}
 
-	_, err = c.GetWebhook(createdWebhook.ID)
+	_, err = c.GetWebhook(context.Background(), createdWebhook.ID)
 	if err != nil {
 		t.Errorf("An error occurred while getting webhook, error %v", err)
 	}
 
-	err = c.DeleteWebhook(createdWebhook.ID)
+	err = c.DeleteWebhook(context.Background(), createdWebhook.ID)
 	if err != nil {
 		t.Errorf("An error occurred while webhooks deletion, error %v", err)
 	}
@@ -200,7 +201,7 @@ func TestCreateAndGetWebhook(t *testing.T) {
 // Creates, updates, and deletes single webhook
 func TestCreateAndUpdateWebhook(t *testing.T) {
 	c, _ := NewClient(testClientID, testSecret, APIBaseSandBox)
-	c.GetAccessToken()
+	c.GetAccessToken(context.Background())
 
 	creationPayload := &CreateWebhookRequest{
 		URL: "https://example.com/paypal_webhooks",
@@ -211,7 +212,7 @@ func TestCreateAndUpdateWebhook(t *testing.T) {
 		},
 	}
 
-	createdWebhook, err := c.CreateWebhook(creationPayload)
+	createdWebhook, err := c.CreateWebhook(context.Background(), creationPayload)
 	if err != nil {
 		t.Errorf("Webhook couldn't be created, error %v", err)
 	}
@@ -228,12 +229,12 @@ func TestCreateAndUpdateWebhook(t *testing.T) {
 		},
 	}
 
-	_, err = c.UpdateWebhook(createdWebhook.ID, updatePayload)
+	_, err = c.UpdateWebhook(context.Background(), createdWebhook.ID, updatePayload)
 	if err != nil {
 		t.Errorf("Couldn't update webhook, error %v", err)
 	}
 
-	err = c.DeleteWebhook(createdWebhook.ID)
+	err = c.DeleteWebhook(context.Background(), createdWebhook.ID)
 	if err != nil {
 		t.Errorf("An error occurred while webhooks deletion, error %v", err)
 	}
@@ -241,9 +242,9 @@ func TestCreateAndUpdateWebhook(t *testing.T) {
 
 func TestListWebhooks(t *testing.T) {
 	c, _ := NewClient(testClientID, testSecret, APIBaseSandBox)
-	c.GetAccessToken()
+	c.GetAccessToken(context.Background())
 
-	_, err := c.ListWebhooks(AncorTypeApplication)
+	_, err := c.ListWebhooks(context.Background(), AncorTypeApplication)
 	if err != nil {
 		t.Errorf("Cannot registered list webhooks, error %v", err)
 	}
@@ -251,7 +252,7 @@ func TestListWebhooks(t *testing.T) {
 
 func TestProduct(t *testing.T) {
 	c, _ := NewClient(testClientID, testSecret, APIBaseSandBox)
-	c.GetAccessToken()
+	c.GetAccessToken(context.Background())
 
 	//create a product
 	productData := Product{
@@ -263,7 +264,7 @@ func TestProduct(t *testing.T) {
 		HomeUrl:     "https://example.com",
 	}
 
-	productCreateResponse, err := c.CreateProduct(productData)
+	productCreateResponse, err := c.CreateProduct(context.Background(), productData)
 	assert.Equal(t, nil, err)
 
 	testProductId = productCreateResponse.ID
@@ -272,23 +273,23 @@ func TestProduct(t *testing.T) {
 	productData.ID = productCreateResponse.ID
 	productData.Description = "Updated product"
 
-	err = c.UpdateProduct(productData)
+	err = c.UpdateProduct(context.Background(), productData)
 	assert.Equal(t, nil, err)
 
 	//get product data
-	productFetched, err := c.GetProduct(productData.ID)
+	productFetched, err := c.GetProduct(context.Background(), productData.ID)
 	assert.Equal(t, nil, err)
 	assert.Equal(t, productFetched.Description, "Updated product")
 
 	//test that lising products have more than one product
-	productList, err := c.ListProducts(nil)
+	productList, err := c.ListProducts(context.Background(), nil)
 	assert.Equal(t, nil, err)
 	assert.NotEqual(t, len(productList.Products), 0)
 }
 
 func TestSubscriptionPlans(t *testing.T) {
 	c, _ := NewClient(testClientID, testSecret, APIBaseSandBox)
-	c.GetAccessToken()
+	c.GetAccessToken(context.Background())
 
 	//create a product
 	newSubscriptionPlan := SubscriptionPlan{
@@ -330,35 +331,35 @@ func TestSubscriptionPlans(t *testing.T) {
 	}
 
 	//test create new plan
-	planCreateResponse, err := c.CreateSubscriptionPlan(newSubscriptionPlan)
+	planCreateResponse, err := c.CreateSubscriptionPlan(context.Background(), newSubscriptionPlan)
 	assert.Equal(t, nil, err)
 	testBillingPlan = planCreateResponse.ID // for next test
 
 	//test update the newly created plan
 	newSubscriptionPlan.ID = planCreateResponse.ID
 	newSubscriptionPlan.Description = "updated description"
-	err = c.UpdateSubscriptionPlan(newSubscriptionPlan)
+	err = c.UpdateSubscriptionPlan(context.Background(), newSubscriptionPlan)
 	assert.Equal(t, nil, err)
 
 	//test get plan information
-	existingPlan, err := c.GetSubscriptionPlan(newSubscriptionPlan.ID)
+	existingPlan, err := c.GetSubscriptionPlan(context.Background(), newSubscriptionPlan.ID)
 	assert.Equal(t, nil, err)
 	assert.Equal(t, newSubscriptionPlan.Description, existingPlan.Description)
 
 	//test activate plan
-	err = c.ActivateSubscriptionPlan(newSubscriptionPlan.ID)
+	err = c.ActivateSubscriptionPlan(context.Background(), newSubscriptionPlan.ID)
 	assert.Equal(t, nil, err)
 
 	//test deactivate plan
-	err = c.DeactivateSubscriptionPlans(newSubscriptionPlan.ID)
+	err = c.DeactivateSubscriptionPlans(context.Background(), newSubscriptionPlan.ID)
 	assert.Equal(t, nil, err)
 
 	//reactivate this plan for next next (subscription)
-	err = c.ActivateSubscriptionPlan(newSubscriptionPlan.ID)
+	err = c.ActivateSubscriptionPlan(context.Background(), newSubscriptionPlan.ID)
 	assert.Equal(t, nil, err)
 
 	//test upadte plan pricing
-	err = c.UpdateSubscriptionPlanPricing(newSubscriptionPlan.ID, []PricingSchemeUpdate{
+	err = c.UpdateSubscriptionPlanPricing(context.Background(), newSubscriptionPlan.ID, []PricingSchemeUpdate{
 		{
 			BillingCycleSequence: 1,
 			PricingScheme: PricingScheme{
@@ -375,7 +376,7 @@ func TestSubscriptionPlans(t *testing.T) {
 	assert.Equal(t, nil, err)
 
 	//test update pricing scheme
-	updatedPricingPlan, err := c.GetSubscriptionPlan(newSubscriptionPlan.ID)
+	updatedPricingPlan, err := c.GetSubscriptionPlan(context.Background(), newSubscriptionPlan.ID)
 	assert.Equal(t, nil, err)
 	assert.Equal(t, "6.0", updatedPricingPlan.BillingCycles[0].PricingScheme.FixedPrice.Value)
 
@@ -383,20 +384,34 @@ func TestSubscriptionPlans(t *testing.T) {
 
 func TestSubscription(t *testing.T) {
 	c, _ := NewClient(testClientID, testSecret, APIBaseSandBox)
-	c.GetAccessToken()
+	c.GetAccessToken(context.Background())
 
 	newSubscription := SubscriptionBase{
 		PlanID: testBillingPlan,
 	}
 
 	//create new subscription
-	newSubResponse, err := c.CreateSubscription(newSubscription)
+	newSubResponse, err := c.CreateSubscription(context.Background(), newSubscription)
 	assert.Equal(t, nil, err)
 	assert.NotEqual(t, "", newSubResponse.ID)
 
 	//get subscription details
-	subDetails, err := c.GetSubscriptionDetails(newSubResponse.ID)
+	subDetails, err := c.GetSubscriptionDetails(context.Background(), newSubResponse.ID)
 	assert.Equal(t, nil, err)
 	assert.NotEqual(t, "", subDetails.ID)
 
 }
+
+func TestGetWebhookEventTypes(t *testing.T) {
+	c, _ := NewClient(testClientID, testSecret, APIBaseSandBox)
+	c.GetAccessToken(context.Background())
+
+	r, err := c.GetWebhookEventTypes(context.Background())
+	assert.Equal(t, nil, err)
+	assert.GreaterOrEqual(t, len(r.EventTypes), 1)
+	for _, v := range r.EventTypes {
+		assert.GreaterOrEqual(t, len(v.Name), 1)
+		assert.GreaterOrEqual(t, len(v.Description), 1)
+		assert.GreaterOrEqual(t, len(v.Status), 1)
+	}
+}
diff --git a/order.go b/order.go
index 9b732bf..dc5772a 100644
--- a/order.go
+++ b/order.go
@@ -1,13 +1,16 @@
 package paypal
 
-import "fmt"
+import (
+	"context"
+	"fmt"
+)
 
 // GetOrder retrieves order by ID
 // Endpoint: GET /v2/checkout/orders/ID
-func (c *Client) GetOrder(orderID string) (*Order, error) {
+func (c *Client) GetOrder(ctx context.Context, orderID string) (*Order, error) {
 	order := &Order{}
 
-	req, err := c.NewRequest("GET", fmt.Sprintf("%s%s%s", c.APIBase, "/v2/checkout/orders/", orderID), nil)
+	req, err := c.NewRequest(ctx, "GET", fmt.Sprintf("%s%s%s", c.APIBase, "/v2/checkout/orders/", orderID), nil)
 	if err != nil {
 		return order, err
 	}
@@ -21,7 +24,7 @@ func (c *Client) GetOrder(orderID string) (*Order, error) {
 
 // CreateOrder - Use this call to create an order
 // Endpoint: POST /v2/checkout/orders
-func (c *Client) CreateOrder(intent string, purchaseUnits []PurchaseUnitRequest, payer *CreateOrderPayer, appContext *ApplicationContext) (*Order, error) {
+func (c *Client) CreateOrder(ctx context.Context, intent string, purchaseUnits []PurchaseUnitRequest, payer *CreateOrderPayer, appContext *ApplicationContext) (*Order, error) {
 	type createOrderRequest struct {
 		Intent             string                `json:"intent"`
 		Payer              *CreateOrderPayer     `json:"payer,omitempty"`
@@ -31,7 +34,7 @@ func (c *Client) CreateOrder(intent string, purchaseUnits []PurchaseUnitRequest,
 
 	order := &Order{}
 
-	req, err := c.NewRequest("POST", fmt.Sprintf("%s%s", c.APIBase, "/v2/checkout/orders"), createOrderRequest{Intent: intent, PurchaseUnits: purchaseUnits, Payer: payer, ApplicationContext: appContext})
+	req, err := c.NewRequest(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v2/checkout/orders"), createOrderRequest{Intent: intent, PurchaseUnits: purchaseUnits, Payer: payer, ApplicationContext: appContext})
 	if err != nil {
 		return order, err
 	}
@@ -45,10 +48,10 @@ func (c *Client) CreateOrder(intent string, purchaseUnits []PurchaseUnitRequest,
 
 // UpdateOrder updates the order by ID
 // Endpoint: PATCH /v2/checkout/orders/ID
-func (c *Client) UpdateOrder(orderID string, purchaseUnits []PurchaseUnitRequest) (*Order, error) {
+func (c *Client) UpdateOrder(ctx context.Context, orderID string, purchaseUnits []PurchaseUnitRequest) (*Order, error) {
 	order := &Order{}
 
-	req, err := c.NewRequest("PATCH", fmt.Sprintf("%s%s%s", c.APIBase, "/v2/checkout/orders/", orderID), purchaseUnits)
+	req, err := c.NewRequest(ctx, "PATCH", fmt.Sprintf("%s%s%s", c.APIBase, "/v2/checkout/orders/", orderID), purchaseUnits)
 	if err != nil {
 		return order, err
 	}
@@ -62,10 +65,10 @@ func (c *Client) UpdateOrder(orderID string, purchaseUnits []PurchaseUnitRequest
 
 // AuthorizeOrder - https://developer.paypal.com/docs/api/orders/v2/#orders_authorize
 // Endpoint: POST /v2/checkout/orders/ID/authorize
-func (c *Client) AuthorizeOrder(orderID string, authorizeOrderRequest AuthorizeOrderRequest) (*Authorization, error) {
+func (c *Client) AuthorizeOrder(ctx context.Context, orderID string, authorizeOrderRequest AuthorizeOrderRequest) (*Authorization, error) {
 	auth := &Authorization{}
 
-	req, err := c.NewRequest("POST", fmt.Sprintf("%s%s", c.APIBase, "/v2/checkout/orders/"+orderID+"/authorize"), authorizeOrderRequest)
+	req, err := c.NewRequest(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v2/checkout/orders/"+orderID+"/authorize"), authorizeOrderRequest)
 	if err != nil {
 		return auth, err
 	}
@@ -79,14 +82,14 @@ func (c *Client) AuthorizeOrder(orderID string, authorizeOrderRequest AuthorizeO
 
 // CaptureOrder - https://developer.paypal.com/docs/api/orders/v2/#orders_capture
 // Endpoint: POST /v2/checkout/orders/ID/capture
-func (c *Client) CaptureOrder(orderID string, captureOrderRequest CaptureOrderRequest) (*CaptureOrderResponse, error) {
-	return c.CaptureOrderWithPaypalRequestId(orderID, captureOrderRequest, "")
+func (c *Client) CaptureOrder(ctx context.Context, orderID string, captureOrderRequest CaptureOrderRequest) (*CaptureOrderResponse, error) {
+	return c.CaptureOrderWithPaypalRequestId(ctx, orderID, captureOrderRequest, "")
 }
 
 // CaptureOrder with idempotency - https://developer.paypal.com/docs/api/orders/v2/#orders_capture
 // Endpoint: POST /v2/checkout/orders/ID/capture
 // https://developer.paypal.com/docs/api/reference/api-requests/#http-request-headers
-func (c *Client) CaptureOrderWithPaypalRequestId(
+func (c *Client) CaptureOrderWithPaypalRequestId(ctx context.Context,
 	orderID string,
 	captureOrderRequest CaptureOrderRequest,
 	requestID string,
@@ -94,7 +97,7 @@ func (c *Client) CaptureOrderWithPaypalRequestId(
 	capture := &CaptureOrderResponse{}
 
 	c.SetReturnRepresentation()
-	req, err := c.NewRequest("POST", fmt.Sprintf("%s%s", c.APIBase, "/v2/checkout/orders/"+orderID+"/capture"), captureOrderRequest)
+	req, err := c.NewRequest(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v2/checkout/orders/"+orderID+"/capture"), captureOrderRequest)
 	if err != nil {
 		return capture, err
 	}
@@ -112,20 +115,20 @@ func (c *Client) CaptureOrderWithPaypalRequestId(
 
 // RefundCapture - https://developer.paypal.com/docs/api/payments/v2/#captures_refund
 // Endpoint: POST /v2/payments/captures/ID/refund
-func (c *Client) RefundCapture(captureID string, refundCaptureRequest RefundCaptureRequest) (*RefundResponse, error) {
-	return c.RefundCaptureWithPaypalRequestId(captureID, refundCaptureRequest, "")
+func (c *Client) RefundCapture(ctx context.Context, captureID string, refundCaptureRequest RefundCaptureRequest) (*RefundResponse, error) {
+	return c.RefundCaptureWithPaypalRequestId(ctx, captureID, refundCaptureRequest, "")
 }
 
 // RefundCapture with idempotency - https://developer.paypal.com/docs/api/payments/v2/#captures_refund
 // Endpoint: POST /v2/payments/captures/ID/refund
-func (c *Client) RefundCaptureWithPaypalRequestId(
+func (c *Client) RefundCaptureWithPaypalRequestId(ctx context.Context,
 	captureID string,
 	refundCaptureRequest RefundCaptureRequest,
 	requestID string,
 ) (*RefundResponse, error) {
 	refund := &RefundResponse{}
 
-	req, err := c.NewRequest("POST", fmt.Sprintf("%s%s", c.APIBase, "/v2/payments/captures/"+captureID+"/refund"), refundCaptureRequest)
+	req, err := c.NewRequest(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v2/payments/captures/"+captureID+"/refund"), refundCaptureRequest)
 	if err != nil {
 		return refund, err
 	}
diff --git a/payout.go b/payout.go
index 512c630..e74c920 100644
--- a/payout.go
+++ b/payout.go
@@ -1,14 +1,15 @@
 package paypal
 
 import (
+	"context"
 	"fmt"
 )
 
-// CreateSinglePayout submits a payout with an asynchronous API call, which immediately returns the results of a PayPal payment.
+// CreatePayout submits a payout with an asynchronous API call, which immediately returns the results of a PayPal payment.
 // For email payout set RecipientType: "EMAIL" and receiver email into Receiver
 // Endpoint: POST /v1/payments/payouts
-func (c *Client) CreateSinglePayout(p Payout) (*PayoutResponse, error) {
-	req, err := c.NewRequest("POST", fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/payouts"), p)
+func (c *Client) CreatePayout(ctx context.Context, p Payout) (*PayoutResponse, error) {
+	req, err := c.NewRequest(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/payouts"), p)
 	response := &PayoutResponse{}
 
 	if err != nil {
@@ -22,11 +23,16 @@ func (c *Client) CreateSinglePayout(p Payout) (*PayoutResponse, error) {
 	return response, nil
 }
 
+// CreateSinglePayout is deprecated, use CreatePayout instead.
+func (c *Client) CreateSinglePayout(ctx context.Context, p Payout) (*PayoutResponse, error) {
+	return c.CreatePayout(ctx, p)
+}
+
 // GetPayout shows the latest status of a batch payout along with the transaction status and other data for individual items.
 // Also, returns IDs for the individual payout items. You can use these item IDs in other calls.
 // Endpoint: GET /v1/payments/payouts/ID
-func (c *Client) GetPayout(payoutBatchID string) (*PayoutResponse, error) {
-	req, err := c.NewRequest("GET", fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/payouts/"+payoutBatchID), nil)
+func (c *Client) GetPayout(ctx context.Context, payoutBatchID string) (*PayoutResponse, error) {
+	req, err := c.NewRequest(ctx, "GET", fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/payouts/"+payoutBatchID), nil)
 	response := &PayoutResponse{}
 
 	if err != nil {
@@ -43,8 +49,8 @@ func (c *Client) GetPayout(payoutBatchID string) (*PayoutResponse, error) {
 // GetPayoutItem shows the details for a payout item.
 // Use this call to review the current status of a previously unclaimed, or pending, payout item.
 // Endpoint: GET /v1/payments/payouts-item/ID
-func (c *Client) GetPayoutItem(payoutItemID string) (*PayoutItemResponse, error) {
-	req, err := c.NewRequest("GET", fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/payouts-item/"+payoutItemID), nil)
+func (c *Client) GetPayoutItem(ctx context.Context, payoutItemID string) (*PayoutItemResponse, error) {
+	req, err := c.NewRequest(ctx, "GET", fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/payouts-item/"+payoutItemID), nil)
 	response := &PayoutItemResponse{}
 
 	if err != nil {
@@ -61,8 +67,8 @@ func (c *Client) GetPayoutItem(payoutItemID string) (*PayoutItemResponse, error)
 // CancelPayoutItem cancels an unclaimed Payout Item. If no one claims the unclaimed item within 30 days,
 // the funds are automatically returned to the sender. Use this call to cancel the unclaimed item before the automatic 30-day refund.
 // Endpoint: POST /v1/payments/payouts-item/ID/cancel
-func (c *Client) CancelPayoutItem(payoutItemID string) (*PayoutItemResponse, error) {
-	req, err := c.NewRequest("POST", fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/payouts-item/"+payoutItemID+"/cancel"), nil)
+func (c *Client) CancelPayoutItem(ctx context.Context, payoutItemID string) (*PayoutItemResponse, error) {
+	req, err := c.NewRequest(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/payouts-item/"+payoutItemID+"/cancel"), nil)
 	response := &PayoutItemResponse{}
 
 	if err != nil {
diff --git a/products.go b/products.go
index fb41b99..1b2c2da 100644
--- a/products.go
+++ b/products.go
@@ -1,6 +1,7 @@
 package paypal
 
 import (
+	"context"
 	"fmt"
 	"net/http"
 )
@@ -60,8 +61,8 @@ func (self *Product) GetUpdatePatch() []Patch {
 // CreateProduct creates a product
 // Doc: https://developer.paypal.com/docs/api/catalog-products/v1/#products_create
 // Endpoint: POST /v1/catalogs/products
-func (c *Client) CreateProduct(product Product) (*CreateProductResponse, error) {
-	req, err := c.NewRequest(http.MethodPost, fmt.Sprintf("%s%s", c.APIBase, "/v1/catalogs/products"), product)
+func (c *Client) CreateProduct(ctx context.Context, product Product) (*CreateProductResponse, error) {
+	req, err := c.NewRequest(ctx, http.MethodPost, fmt.Sprintf("%s%s", c.APIBase, "/v1/catalogs/products"), product)
 	response := &CreateProductResponse{}
 	if err != nil {
 		return response, err
@@ -73,8 +74,8 @@ func (c *Client) CreateProduct(product Product) (*CreateProductResponse, error)
 // UpdateProduct. updates a product information
 // Doc: https://developer.paypal.com/docs/api/catalog-products/v1/#products_patch
 // Endpoint: PATCH /v1/catalogs/products/:product_id
-func (c *Client) UpdateProduct(product Product) error {
-	req, err := c.NewRequest(http.MethodPatch, fmt.Sprintf("%s%s%s", c.APIBase, "/v1/catalogs/products/", product.ID), product.GetUpdatePatch())
+func (c *Client) UpdateProduct(ctx context.Context, product Product) error {
+	req, err := c.NewRequest(ctx, http.MethodPatch, fmt.Sprintf("%s%s%s", c.APIBase, "/v1/catalogs/products/", product.ID), product.GetUpdatePatch())
 	if err != nil {
 		return err
 	}
@@ -85,8 +86,8 @@ func (c *Client) UpdateProduct(product Product) error {
 // Get product details
 // Doc: https://developer.paypal.com/docs/api/catalog-products/v1/#products_get
 // Endpoint: GET /v1/catalogs/products/:product_id
-func (c *Client) GetProduct(productId string) (*Product, error) {
-	req, err := c.NewRequest(http.MethodGet, fmt.Sprintf("%s%s%s", c.APIBase, "/v1/catalogs/products/", productId), nil)
+func (c *Client) GetProduct(ctx context.Context, productId string) (*Product, error) {
+	req, err := c.NewRequest(ctx, http.MethodGet, fmt.Sprintf("%s%s%s", c.APIBase, "/v1/catalogs/products/", productId), nil)
 	response := &Product{}
 	if err != nil {
 		return response, err
@@ -98,8 +99,8 @@ func (c *Client) GetProduct(productId string) (*Product, error) {
 // List all products
 // Doc: https://developer.paypal.com/docs/api/catalog-products/v1/#products_list
 // Endpoint: GET /v1/catalogs/products
-func (c *Client) ListProducts(params *ProductListParameters) (*ListProductsResponse, error) {
-	req, err := c.NewRequest(http.MethodGet, fmt.Sprintf("%s%s", c.APIBase, "/v1/catalogs/products"), nil)
+func (c *Client) ListProducts(ctx context.Context, params *ProductListParameters) (*ListProductsResponse, error) {
+	req, err := c.NewRequest(ctx, http.MethodGet, fmt.Sprintf("%s%s", c.APIBase, "/v1/catalogs/products"), nil)
 	response := &ListProductsResponse{}
 	if err != nil {
 		return response, err
diff --git a/sale.go b/sale.go
index f1e4d9c..0d81cb9 100644
--- a/sale.go
+++ b/sale.go
@@ -1,15 +1,18 @@
 package paypal
 
-import "fmt"
+import (
+	"context"
+	"fmt"
+)
 
 // GetSale returns a sale by ID
 // Use this call to get details about a sale transaction.
 // Note: This call returns only the sales that were created via the REST API.
 // Endpoint: GET /v1/payments/sale/ID
-func (c *Client) GetSale(saleID string) (*Sale, error) {
+func (c *Client) GetSale(ctx context.Context, saleID string) (*Sale, error) {
 	sale := &Sale{}
 
-	req, err := c.NewRequest("GET", fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/sale/"+saleID), nil)
+	req, err := c.NewRequest(ctx, "GET", fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/sale/"+saleID), nil)
 	if err != nil {
 		return sale, err
 	}
@@ -24,14 +27,14 @@ func (c *Client) GetSale(saleID string) (*Sale, error) {
 // RefundSale refunds a completed payment.
 // Use this call to refund a completed payment. Provide the sale_id in the URI and an empty JSON payload for a full refund. For partial refunds, you can include an amount.
 // Endpoint: POST /v1/payments/sale/ID/refund
-func (c *Client) RefundSale(saleID string, a *Amount) (*Refund, error) {
+func (c *Client) RefundSale(ctx context.Context, saleID string, a *Amount) (*Refund, error) {
 	type refundRequest struct {
 		Amount *Amount `json:"amount"`
 	}
 
 	refund := &Refund{}
 
-	req, err := c.NewRequest("POST", fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/sale/"+saleID+"/refund"), &refundRequest{Amount: a})
+	req, err := c.NewRequest(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v1/payments/sale/"+saleID+"/refund"), &refundRequest{Amount: a})
 	if err != nil {
 		return refund, err
 	}
@@ -46,10 +49,10 @@ func (c *Client) RefundSale(saleID string, a *Amount) (*Refund, error) {
 // GetRefund by ID
 // Use it to look up details of a specific refund on direct and captured payments.
 // Endpoint: GET /v2/payments/refund/ID
-func (c *Client) GetRefund(refundID string) (*Refund, error) {
+func (c *Client) GetRefund(ctx context.Context, refundID string) (*Refund, error) {
 	refund := &Refund{}
 
-	req, err := c.NewRequest("GET", fmt.Sprintf("%s%s", c.APIBase, "/v2/payments/refund/"+refundID), nil)
+	req, err := c.NewRequest(ctx, "GET", fmt.Sprintf("%s%s", c.APIBase, "/v2/payments/refund/"+refundID), nil)
 	if err != nil {
 		return refund, err
 	}
diff --git a/subscription.go b/subscription.go
index 77b414d..efdb7e4 100644
--- a/subscription.go
+++ b/subscription.go
@@ -1,6 +1,7 @@
 package paypal
 
 import (
+	"context"
 	"fmt"
 	"net/http"
 	"time"
@@ -88,8 +89,8 @@ func (self *Subscription) GetUpdatePatch() []Patch {
 // CreateSubscriptionPlan creates a subscriptionPlan
 // Doc: https://developer.paypal.com/docs/api/subscriptions/v1/#subscriptions_create
 // Endpoint: POST /v1/billing/subscriptions
-func (c *Client) CreateSubscription(newSubscription SubscriptionBase) (*SubscriptionDetailResp, error) {
-	req, err := c.NewRequest(http.MethodPost, fmt.Sprintf("%s%s", c.APIBase, "/v1/billing/subscriptions"), newSubscription)
+func (c *Client) CreateSubscription(ctx context.Context, newSubscription SubscriptionBase) (*SubscriptionDetailResp, error) {
+	req, err := c.NewRequest(ctx, http.MethodPost, fmt.Sprintf("%s%s", c.APIBase, "/v1/billing/subscriptions"), newSubscription)
 	req.Header.Add("Prefer", "return=representation")
 	response := &SubscriptionDetailResp{}
 	if err != nil {
@@ -102,8 +103,8 @@ func (c *Client) CreateSubscription(newSubscription SubscriptionBase) (*Subscrip
 // UpdateSubscriptionPlan. updates a plan
 // Doc: https://developer.paypal.com/docs/api/subscriptions/v1/#subscriptions_patch
 // Endpoint: PATCH /v1/billing/subscriptions/:subscription_id
-func (c *Client) UpdateSubscription(updatedSubscription Subscription) error {
-	req, err := c.NewRequest(http.MethodPatch, fmt.Sprintf("%s%s%s", c.APIBase, "/v1/billing/subscriptions/", updatedSubscription.ID), updatedSubscription.GetUpdatePatch())
+func (c *Client) UpdateSubscription(ctx context.Context, updatedSubscription Subscription) error {
+	req, err := c.NewRequest(ctx, http.MethodPatch, fmt.Sprintf("%s%s%s", c.APIBase, "/v1/billing/subscriptions/", updatedSubscription.ID), updatedSubscription.GetUpdatePatch())
 	if err != nil {
 		return err
 	}
@@ -113,8 +114,8 @@ func (c *Client) UpdateSubscription(updatedSubscription Subscription) error {
 
 // GetSubscriptionDetails shows details for a subscription, by ID.
 // Endpoint: GET /v1/billing/subscriptions/
-func (c *Client) GetSubscriptionDetails(subscriptionID string) (*SubscriptionDetailResp, error) {
-	req, err := http.NewRequest(http.MethodGet, fmt.Sprintf("%s/v1/billing/subscriptions/%s", c.APIBase, subscriptionID), nil)
+func (c *Client) GetSubscriptionDetails(ctx context.Context, subscriptionID string) (*SubscriptionDetailResp, error) {
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, fmt.Sprintf("%s/v1/billing/subscriptions/%s", c.APIBase, subscriptionID), nil)
 	response := &SubscriptionDetailResp{}
 	if err != nil {
 		return response, err
@@ -126,8 +127,8 @@ func (c *Client) GetSubscriptionDetails(subscriptionID string) (*SubscriptionDet
 // Activates the subscription.
 // Doc: https://developer.paypal.com/docs/api/subscriptions/v1/#subscriptions_activate
 // Endpoint: POST /v1/billing/subscriptions/{id}/activate
-func (c *Client) ActivateSubscription(subscriptionId, activateReason string) error {
-	req, err := c.NewRequest(http.MethodPost, fmt.Sprintf("%s/v1/billing/subscriptions/%s/activate", c.APIBase, subscriptionId), map[string]string{"reason": activateReason})
+func (c *Client) ActivateSubscription(ctx context.Context, subscriptionId, activateReason string) error {
+	req, err := c.NewRequest(ctx, http.MethodPost, fmt.Sprintf("%s/v1/billing/subscriptions/%s/activate", c.APIBase, subscriptionId), map[string]string{"reason": activateReason})
 	if err != nil {
 		return err
 	}
@@ -138,8 +139,8 @@ func (c *Client) ActivateSubscription(subscriptionId, activateReason string) err
 // Cancels the subscription.
 // Doc: https://developer.paypal.com/docs/api/subscriptions/v1/#subscriptions_cancel
 // Endpoint: POST /v1/billing/subscriptions/{id}/cancel
-func (c *Client) CancelSubscription(subscriptionId, cancelReason string) error {
-	req, err := c.NewRequest(http.MethodPost, fmt.Sprintf("%s/v1/billing/subscriptions/%s/cancel", c.APIBase, subscriptionId), map[string]string{"reason": cancelReason})
+func (c *Client) CancelSubscription(ctx context.Context, subscriptionId, cancelReason string) error {
+	req, err := c.NewRequest(ctx, http.MethodPost, fmt.Sprintf("%s/v1/billing/subscriptions/%s/cancel", c.APIBase, subscriptionId), map[string]string{"reason": cancelReason})
 	if err != nil {
 		return err
 	}
@@ -150,8 +151,8 @@ func (c *Client) CancelSubscription(subscriptionId, cancelReason string) error {
 // Captures an authorized payment from the subscriber on the subscription.
 // Doc: https://developer.paypal.com/docs/api/subscriptions/v1/#subscriptions_capture
 // Endpoint: POST /v1/billing/subscriptions/{id}/capture
-func (c *Client) CaptureSubscription(subscriptionId string, request CaptureReqeust) (*SubscriptionCaptureResponse, error) {
-	req, err := c.NewRequest(http.MethodPost, fmt.Sprintf("%s/v1/billing/subscriptions/%s/capture", c.APIBase, subscriptionId), request)
+func (c *Client) CaptureSubscription(ctx context.Context, subscriptionId string, request CaptureReqeust) (*SubscriptionCaptureResponse, error) {
+	req, err := c.NewRequest(ctx, http.MethodPost, fmt.Sprintf("%s/v1/billing/subscriptions/%s/capture", c.APIBase, subscriptionId), request)
 	response := &SubscriptionCaptureResponse{}
 	if err != nil {
 		return response, err
@@ -163,8 +164,8 @@ func (c *Client) CaptureSubscription(subscriptionId string, request CaptureReqeu
 // Suspends the subscription.
 // Doc: https://developer.paypal.com/docs/api/subscriptions/v1/#subscriptions_suspend
 // Endpoint: POST /v1/billing/subscriptions/{id}/suspend
-func (c *Client) SuspendSubscription(subscriptionId, reason string) error {
-	req, err := c.NewRequest(http.MethodPost, fmt.Sprintf("%s/v1/billing/subscriptions/%s/suspend", c.APIBase, subscriptionId), map[string]string{"reason": reason})
+func (c *Client) SuspendSubscription(ctx context.Context, subscriptionId, reason string) error {
+	req, err := c.NewRequest(ctx, http.MethodPost, fmt.Sprintf("%s/v1/billing/subscriptions/%s/suspend", c.APIBase, subscriptionId), map[string]string{"reason": reason})
 	if err != nil {
 		return err
 	}
@@ -175,10 +176,10 @@ func (c *Client) SuspendSubscription(subscriptionId, reason string) error {
 // Lists transactions for a subscription.
 // Doc: https://developer.paypal.com/docs/api/subscriptions/v1/#subscriptions_transactions
 // Endpoint: GET /v1/billing/subscriptions/{id}/transactions
-func (c *Client) GetSubscriptionTransactions(requestParams SubscriptionTransactionsParams) (*SubscriptionTransactionsResponse, error) {
+func (c *Client) GetSubscriptionTransactions(ctx context.Context, requestParams SubscriptionTransactionsParams) (*SubscriptionTransactionsResponse, error) {
 	startTime := requestParams.StartTime.Format("2006-01-02T15:04:05Z")
 	endTime := requestParams.EndTime.Format("2006-01-02T15:04:05Z")
-	req, err := http.NewRequest(http.MethodGet, fmt.Sprintf("%s/v1/billing/subscriptions/%s/transactions?start_time=%s&end_time=%s", c.APIBase, requestParams.SubscriptionId, startTime, endTime), nil)
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, fmt.Sprintf("%s/v1/billing/subscriptions/%s/transactions?start_time=%s&end_time=%s", c.APIBase, requestParams.SubscriptionId, startTime, endTime), nil)
 	response := &SubscriptionTransactionsResponse{}
 	if err != nil {
 		return response, err
@@ -191,8 +192,8 @@ func (c *Client) GetSubscriptionTransactions(requestParams SubscriptionTransacti
 // Revise plan or quantity of subscription
 // Doc: https://developer.paypal.com/docs/api/subscriptions/v1/#subscriptions_revise
 // Endpoint: POST /v1/billing/subscriptions/{id}/revise
-func (c *Client) ReviseSubscription(subscriptionId string, reviseSubscription SubscriptionBase) (*SubscriptionDetailResp, error) {
-	req, err := c.NewRequest(http.MethodPost, fmt.Sprintf("%s/v1/billing/subscriptions/%s/revise", c.APIBase, subscriptionId), reviseSubscription)
+func (c *Client) ReviseSubscription(ctx context.Context, subscriptionId string, reviseSubscription SubscriptionBase) (*SubscriptionDetailResp, error) {
+	req, err := c.NewRequest(ctx, http.MethodPost, fmt.Sprintf("%s/v1/billing/subscriptions/%s/revise", c.APIBase, subscriptionId), reviseSubscription)
 	response := &SubscriptionDetailResp{}
 	if err != nil {
 		return response, err
diff --git a/subscription_plan.go b/subscription_plan.go
index 721c7a2..ffa461f 100644
--- a/subscription_plan.go
+++ b/subscription_plan.go
@@ -1,6 +1,7 @@
 package paypal
 
 import (
+	"context"
 	"fmt"
 	"net/http"
 	"time"
@@ -131,8 +132,8 @@ func (self *SubscriptionPlan) GetUpdatePatch() []Patch {
 // CreateSubscriptionPlan creates a subscriptionPlan
 // Doc: https://developer.paypal.com/docs/api/subscriptions/v1/#plans_create
 // Endpoint: POST /v1/billing/plans
-func (c *Client) CreateSubscriptionPlan(newPlan SubscriptionPlan) (*CreateSubscriptionPlanResponse, error) {
-	req, err := c.NewRequest(http.MethodPost, fmt.Sprintf("%s%s", c.APIBase, "/v1/billing/plans"), newPlan)
+func (c *Client) CreateSubscriptionPlan(ctx context.Context, newPlan SubscriptionPlan) (*CreateSubscriptionPlanResponse, error) {
+	req, err := c.NewRequest(ctx, http.MethodPost, fmt.Sprintf("%s%s", c.APIBase, "/v1/billing/plans"), newPlan)
 	response := &CreateSubscriptionPlanResponse{}
 	if err != nil {
 		return response, err
@@ -144,8 +145,8 @@ func (c *Client) CreateSubscriptionPlan(newPlan SubscriptionPlan) (*CreateSubscr
 // UpdateSubscriptionPlan. updates a plan
 // Doc: https://developer.paypal.com/docs/api/subscriptions/v1/#plans_patch
 // Endpoint: PATCH /v1/billing/plans/:plan_id
-func (c *Client) UpdateSubscriptionPlan(updatedPlan SubscriptionPlan) error {
-	req, err := c.NewRequest(http.MethodPatch, fmt.Sprintf("%s%s%s", c.APIBase, "/v1/billing/plans/", updatedPlan.ID), updatedPlan.GetUpdatePatch())
+func (c *Client) UpdateSubscriptionPlan(ctx context.Context, updatedPlan SubscriptionPlan) error {
+	req, err := c.NewRequest(ctx, http.MethodPatch, fmt.Sprintf("%s%s%s", c.APIBase, "/v1/billing/plans/", updatedPlan.ID), updatedPlan.GetUpdatePatch())
 	if err != nil {
 		return err
 	}
@@ -156,8 +157,8 @@ func (c *Client) UpdateSubscriptionPlan(updatedPlan SubscriptionPlan) error {
 // UpdateSubscriptionPlan. updates a plan
 // Doc: https://developer.paypal.com/docs/api/subscriptions/v1/#plans_get
 // Endpoint: GET /v1/billing/plans/:plan_id
-func (c *Client) GetSubscriptionPlan(planId string) (*SubscriptionPlan, error) {
-	req, err := c.NewRequest(http.MethodGet, fmt.Sprintf("%s%s%s", c.APIBase, "/v1/billing/plans/", planId), nil)
+func (c *Client) GetSubscriptionPlan(ctx context.Context, planId string) (*SubscriptionPlan, error) {
+	req, err := c.NewRequest(ctx, http.MethodGet, fmt.Sprintf("%s%s%s", c.APIBase, "/v1/billing/plans/", planId), nil)
 	response := &SubscriptionPlan{}
 	if err != nil {
 		return response, err
@@ -169,8 +170,8 @@ func (c *Client) GetSubscriptionPlan(planId string) (*SubscriptionPlan, error) {
 // List all plans
 // Doc: https://developer.paypal.com/docs/api/subscriptions/v1/#plans_list
 // Endpoint: GET /v1/billing/plans
-func (c *Client) ListSubscriptionPlans(params *SubscriptionPlanListParameters) (*ListSubscriptionPlansResponse, error) {
-	req, err := c.NewRequest(http.MethodGet, fmt.Sprintf("%s%s", c.APIBase, "/v1/billing/plans"), nil)
+func (c *Client) ListSubscriptionPlans(ctx context.Context, params *SubscriptionPlanListParameters) (*ListSubscriptionPlansResponse, error) {
+	req, err := c.NewRequest(ctx, http.MethodGet, fmt.Sprintf("%s%s", c.APIBase, "/v1/billing/plans"), nil)
 	response := &ListSubscriptionPlansResponse{}
 	if err != nil {
 		return response, err
@@ -193,8 +194,8 @@ func (c *Client) ListSubscriptionPlans(params *SubscriptionPlanListParameters) (
 // Activates a plan
 // Doc: https://developer.paypal.com/docs/api/subscriptions/v1/#plans_activate
 // Endpoint: POST /v1/billing/plans/{id}/activate
-func (c *Client) ActivateSubscriptionPlan(planId string) error {
-	req, err := c.NewRequest(http.MethodPost, fmt.Sprintf("%s/v1/billing/plans/%s/activate", c.APIBase, planId), nil)
+func (c *Client) ActivateSubscriptionPlan(ctx context.Context, planId string) error {
+	req, err := c.NewRequest(ctx, http.MethodPost, fmt.Sprintf("%s/v1/billing/plans/%s/activate", c.APIBase, planId), nil)
 	if err != nil {
 		return err
 	}
@@ -206,8 +207,8 @@ func (c *Client) ActivateSubscriptionPlan(planId string) error {
 // Deactivates a plan
 // Doc: https://developer.paypal.com/docs/api/subscriptions/v1/#plans_deactivate
 // Endpoint: POST /v1/billing/plans/{id}/deactivate
-func (c *Client) DeactivateSubscriptionPlans(planId string) error {
-	req, err := c.NewRequest(http.MethodPost, fmt.Sprintf("%s/v1/billing/plans/%s/deactivate", c.APIBase, planId), nil)
+func (c *Client) DeactivateSubscriptionPlans(ctx context.Context, planId string) error {
+	req, err := c.NewRequest(ctx, http.MethodPost, fmt.Sprintf("%s/v1/billing/plans/%s/deactivate", c.APIBase, planId), nil)
 	if err != nil {
 		return err
 	}
@@ -219,8 +220,8 @@ func (c *Client) DeactivateSubscriptionPlans(planId string) error {
 // Updates pricing for a plan. For example, you can update a regular billing cycle from $5 per month to $7 per month.
 // Doc: https://developer.paypal.com/docs/api/subscriptions/v1/#plans_update-pricing-schemes
 // Endpoint: POST /v1/billing/plans/{id}/update-pricing-schemes
-func (c *Client) UpdateSubscriptionPlanPricing(planId string, pricingSchemes []PricingSchemeUpdate) error {
-	req, err := c.NewRequest(http.MethodPost, fmt.Sprintf("%s/v1/billing/plans/%s/update-pricing-schemes", c.APIBase, planId), PricingSchemeUpdateRequest{
+func (c *Client) UpdateSubscriptionPlanPricing(ctx context.Context, planId string, pricingSchemes []PricingSchemeUpdate) error {
+	req, err := c.NewRequest(ctx, http.MethodPost, fmt.Sprintf("%s/v1/billing/plans/%s/update-pricing-schemes", c.APIBase, planId), PricingSchemeUpdateRequest{
 		Schemes: pricingSchemes,
 	})
 	if err != nil {
diff --git a/transaction_search.go b/transaction_search.go
index 9fdf773..a10a250 100644
--- a/transaction_search.go
+++ b/transaction_search.go
@@ -1,6 +1,7 @@
 package paypal
 
 import (
+	"context"
 	"fmt"
 	"strconv"
 	"time"
@@ -35,10 +36,10 @@ type TransactionSearchResponse struct {
 
 // ListTransactions - Use this to search PayPal transactions from the last 31 days.
 // Endpoint: GET /v1/reporting/transactions
-func (c *Client) ListTransactions(req *TransactionSearchRequest) (*TransactionSearchResponse, error) {
+func (c *Client) ListTransactions(ctx context.Context, req *TransactionSearchRequest) (*TransactionSearchResponse, error) {
 	response := &TransactionSearchResponse{}
 
-	r, err := c.NewRequest("GET", fmt.Sprintf("%s%s", c.APIBase, "/v1/reporting/transactions"), nil)
+	r, err := c.NewRequest(ctx, "GET", fmt.Sprintf("%s%s", c.APIBase, "/v1/reporting/transactions"), nil)
 	if err != nil {
 		return nil, err
 	}
diff --git a/types.go b/types.go
index c9b87a0..1279f2b 100644
--- a/types.go
+++ b/types.go
@@ -134,11 +134,11 @@ const (
 //
 // https://developer.paypal.com/docs/api/payments.payouts-batch/v1/#definition-batch_status
 const (
-	BatchStatusDenied  string = "DENIED"
-	BatchStatusPending     string = "PENDING"
-	BatchStatusProcessing  string = "PROCESSING"
+	BatchStatusDenied     string = "DENIED"
+	BatchStatusPending    string = "PENDING"
+	BatchStatusProcessing string = "PROCESSING"
 	BatchStatusSuccess    string = "SUCCESS"
-	BatchStatusCanceled string = "CANCELED"
+	BatchStatusCanceled   string = "CANCELED"
 )
 
 const (
@@ -1027,6 +1027,10 @@ type (
 		VerificationStatus string `json:"verification_status,omitempty"`
 	}
 
+	WebhookEventTypesResponse struct {
+		EventTypes []WebhookEventType `json:"event_types"`
+	}
+
 	// Webhook strunct
 	Webhook struct {
 		ID         string             `json:"id"`
@@ -1052,6 +1056,7 @@ type (
 	WebhookEventType struct {
 		Name        string `json:"name"`
 		Description string `json:"description"`
+		Status      string `json:"status,omitempty"`
 	}
 
 	// CreateWebhookRequest struct
diff --git a/unit_test.go b/unit_test.go
index 967d516..b1623a4 100644
--- a/unit_test.go
+++ b/unit_test.go
@@ -1,6 +1,7 @@
 package paypal
 
 import (
+	"context"
 	"encoding/json"
 	"io/ioutil"
 	"net/http"
@@ -590,7 +591,7 @@ func TestCreateWebProfile_valid(t *testing.T) {
 		},
 	}
 
-	res, err := c.CreateWebProfile(wp)
+	res, err := c.CreateWebProfile(context.Background(), wp)
 
 	if err != nil {
 		t.Fatal(err)
@@ -609,7 +610,7 @@ func TestCreateWebProfile_invalid(t *testing.T) {
 
 	wp := WebProfile{}
 
-	_, err := c.CreateWebProfile(wp)
+	_, err := c.CreateWebProfile(context.Background(), wp)
 
 	if err == nil {
 		t.Fatalf("expecting an error got nil")
@@ -622,7 +623,7 @@ func TestGetWebProfile_valid(t *testing.T) {
 
 	c, _ := NewClient("foo", "bar", ts.URL)
 
-	res, err := c.GetWebProfile("XP-CP6S-W9DY-96H8-MVN2")
+	res, err := c.GetWebProfile(context.Background(), "XP-CP6S-W9DY-96H8-MVN2")
 
 	if err != nil {
 		t.Fatal(err)
@@ -643,7 +644,7 @@ func TestGetWebProfile_invalid(t *testing.T) {
 
 	c, _ := NewClient("foo", "bar", ts.URL)
 
-	_, err := c.GetWebProfile("foobar")
+	_, err := c.GetWebProfile(context.Background(), "foobar")
 
 	if err == nil {
 		t.Fatalf("expecting an error got nil")
@@ -656,7 +657,7 @@ func TestGetWebProfiles(t *testing.T) {
 
 	c, _ := NewClient("foo", "bar", ts.URL)
 
-	res, err := c.GetWebProfiles()
+	res, err := c.GetWebProfiles(context.Background())
 
 	if err != nil {
 		t.Fatal(err)
@@ -678,7 +679,7 @@ func TestSetWebProfile_valid(t *testing.T) {
 		Name: "Shop T-Shirt YeowZa!",
 	}
 
-	err := c.SetWebProfile(wp)
+	err := c.SetWebProfile(context.Background(), wp)
 
 	if err != nil {
 		t.Fatal(err)
@@ -696,7 +697,7 @@ func TestSetWebProfile_invalid(t *testing.T) {
 		ID: "foobar",
 	}
 
-	err := c.SetWebProfile(wp)
+	err := c.SetWebProfile(context.Background(), wp)
 
 	if err == nil {
 		t.Fatal(err)
@@ -704,7 +705,7 @@ func TestSetWebProfile_invalid(t *testing.T) {
 
 	wp = WebProfile{}
 
-	err = c.SetWebProfile(wp)
+	err = c.SetWebProfile(context.Background(), wp)
 
 	if err == nil {
 		t.Fatal(err)
@@ -722,7 +723,7 @@ func TestDeleteWebProfile_valid(t *testing.T) {
 		Name: "Shop T-Shirt YeowZa!",
 	}
 
-	err := c.SetWebProfile(wp)
+	err := c.SetWebProfile(context.Background(), wp)
 
 	if err != nil {
 		t.Fatal(err)
@@ -736,7 +737,7 @@ func TestDeleteWebProfile_invalid(t *testing.T) {
 
 	c, _ := NewClient("foo", "bar", ts.URL)
 
-	err := c.DeleteWebProfile("foobar")
+	err := c.DeleteWebProfile(context.Background(), "foobar")
 
 	if err == nil {
 		t.Fatal(err)
diff --git a/vault.go b/vault.go
index 42195ad..7425662 100644
--- a/vault.go
+++ b/vault.go
@@ -1,13 +1,14 @@
 package paypal
 
 import (
+	"context"
 	"fmt"
 )
 
 // StoreCreditCard func
 // Endpoint: POST /v1/vault/credit-cards
-func (c *Client) StoreCreditCard(cc CreditCard) (*CreditCard, error) {
-	req, err := c.NewRequest("POST", fmt.Sprintf("%s%s", c.APIBase, "/v1/vault/credit-cards"), cc)
+func (c *Client) StoreCreditCard(ctx context.Context, cc CreditCard) (*CreditCard, error) {
+	req, err := c.NewRequest(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v1/vault/credit-cards"), cc)
 	if err != nil {
 		return nil, err
 	}
@@ -23,8 +24,8 @@ func (c *Client) StoreCreditCard(cc CreditCard) (*CreditCard, error) {
 
 // DeleteCreditCard func
 // Endpoint: DELETE /v1/vault/credit-cards/credit_card_id
-func (c *Client) DeleteCreditCard(id string) error {
-	req, err := c.NewRequest("DELETE", fmt.Sprintf("%s/v1/vault/credit-cards/%s", c.APIBase, id), nil)
+func (c *Client) DeleteCreditCard(ctx context.Context, id string) error {
+	req, err := c.NewRequest(ctx, "DELETE", fmt.Sprintf("%s/v1/vault/credit-cards/%s", c.APIBase, id), nil)
 	if err != nil {
 		return err
 	}
@@ -38,8 +39,8 @@ func (c *Client) DeleteCreditCard(id string) error {
 
 // GetCreditCard func
 // Endpoint: GET /v1/vault/credit-cards/credit_card_id
-func (c *Client) GetCreditCard(id string) (*CreditCard, error) {
-	req, err := c.NewRequest("GET", fmt.Sprintf("%s/v1/vault/credit-cards/%s", c.APIBase, id), nil)
+func (c *Client) GetCreditCard(ctx context.Context, id string) (*CreditCard, error) {
+	req, err := c.NewRequest(ctx, "GET", fmt.Sprintf("%s/v1/vault/credit-cards/%s", c.APIBase, id), nil)
 	if err != nil {
 		return nil, err
 	}
@@ -55,7 +56,7 @@ func (c *Client) GetCreditCard(id string) (*CreditCard, error) {
 
 // GetCreditCards func
 // Endpoint: GET /v1/vault/credit-cards
-func (c *Client) GetCreditCards(ccf *CreditCardsFilter) (*CreditCards, error) {
+func (c *Client) GetCreditCards(ctx context.Context, ccf *CreditCardsFilter) (*CreditCards, error) {
 	page := 1
 	if ccf != nil && ccf.Page > 0 {
 		page = ccf.Page
@@ -65,7 +66,7 @@ func (c *Client) GetCreditCards(ccf *CreditCardsFilter) (*CreditCards, error) {
 		pageSize = ccf.PageSize
 	}
 
-	req, err := c.NewRequest("GET", fmt.Sprintf("%s/v1/vault/credit-cards?page=%d&page_size=%d", c.APIBase, page, pageSize), nil)
+	req, err := c.NewRequest(ctx, "GET", fmt.Sprintf("%s/v1/vault/credit-cards?page=%d&page_size=%d", c.APIBase, page, pageSize), nil)
 	if err != nil {
 		return nil, err
 	}
@@ -81,8 +82,8 @@ func (c *Client) GetCreditCards(ccf *CreditCardsFilter) (*CreditCards, error) {
 
 // PatchCreditCard func
 // Endpoint: PATCH /v1/vault/credit-cards/credit_card_id
-func (c *Client) PatchCreditCard(id string, ccf []CreditCardField) (*CreditCard, error) {
-	req, err := c.NewRequest("PATCH", fmt.Sprintf("%s/v1/vault/credit-cards/%s", c.APIBase, id), ccf)
+func (c *Client) PatchCreditCard(ctx context.Context, id string, ccf []CreditCardField) (*CreditCard, error) {
+	req, err := c.NewRequest(ctx, "PATCH", fmt.Sprintf("%s/v1/vault/credit-cards/%s", c.APIBase, id), ccf)
 	if err != nil {
 		return nil, err
 	}
diff --git a/webhooks.go b/webhooks.go
index dd4d0eb..39d0dba 100644
--- a/webhooks.go
+++ b/webhooks.go
@@ -2,6 +2,7 @@ package paypal
 
 import (
 	"bytes"
+	"context"
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
@@ -10,8 +11,8 @@ import (
 
 // CreateWebhook - Subscribes your webhook listener to events.
 // Endpoint: POST /v1/notifications/webhooks
-func (c *Client) CreateWebhook(createWebhookRequest *CreateWebhookRequest) (*Webhook, error) {
-	req, err := c.NewRequest(http.MethodPost, fmt.Sprintf("%s%s", c.APIBase, "/v1/notifications/webhooks"), createWebhookRequest)
+func (c *Client) CreateWebhook(ctx context.Context, createWebhookRequest *CreateWebhookRequest) (*Webhook, error) {
+	req, err := c.NewRequest(ctx, http.MethodPost, fmt.Sprintf("%s%s", c.APIBase, "/v1/notifications/webhooks"), createWebhookRequest)
 	webhook := &Webhook{}
 	if err != nil {
 		return webhook, err
@@ -23,8 +24,8 @@ func (c *Client) CreateWebhook(createWebhookRequest *CreateWebhookRequest) (*Web
 
 // GetWebhook - Shows details for a webhook, by ID.
 // Endpoint: GET /v1/notifications/webhooks/ID
-func (c *Client) GetWebhook(webhookID string) (*Webhook, error) {
-	req, err := c.NewRequest(http.MethodGet, fmt.Sprintf("%s%s%s", c.APIBase, "/v1/notifications/webhooks/", webhookID), nil)
+func (c *Client) GetWebhook(ctx context.Context, webhookID string) (*Webhook, error) {
+	req, err := c.NewRequest(ctx, http.MethodGet, fmt.Sprintf("%s%s%s", c.APIBase, "/v1/notifications/webhooks/", webhookID), nil)
 	webhook := &Webhook{}
 	if err != nil {
 		return webhook, err
@@ -36,8 +37,8 @@ func (c *Client) GetWebhook(webhookID string) (*Webhook, error) {
 
 // UpdateWebhook - Updates a webhook to replace webhook fields with new values.
 // Endpoint: PATCH /v1/notifications/webhooks/ID
-func (c *Client) UpdateWebhook(webhookID string, fields []WebhookField) (*Webhook, error) {
-	req, err := c.NewRequest(http.MethodPatch, fmt.Sprintf("%s/v1/notifications/webhooks/%s", c.APIBase, webhookID), fields)
+func (c *Client) UpdateWebhook(ctx context.Context, webhookID string, fields []WebhookField) (*Webhook, error) {
+	req, err := c.NewRequest(ctx, http.MethodPatch, fmt.Sprintf("%s/v1/notifications/webhooks/%s", c.APIBase, webhookID), fields)
 	webhook := &Webhook{}
 	if err != nil {
 		return webhook, err
@@ -49,11 +50,11 @@ func (c *Client) UpdateWebhook(webhookID string, fields []WebhookField) (*Webhoo
 
 // ListWebhooks - Lists webhooks for an app.
 // Endpoint: GET /v1/notifications/webhooks
-func (c *Client) ListWebhooks(anchorType string) (*ListWebhookResponse, error) {
+func (c *Client) ListWebhooks(ctx context.Context, anchorType string) (*ListWebhookResponse, error) {
 	if len(anchorType) == 0 {
 		anchorType = AncorTypeApplication
 	}
-	req, err := c.NewRequest(http.MethodGet, fmt.Sprintf("%s%s", c.APIBase, "/v1/notifications/webhooks"), nil)
+	req, err := c.NewRequest(ctx, http.MethodGet, fmt.Sprintf("%s%s", c.APIBase, "/v1/notifications/webhooks"), nil)
 	q := req.URL.Query()
 	q.Add("anchor_type", anchorType)
 	req.URL.RawQuery = q.Encode()
@@ -68,8 +69,8 @@ func (c *Client) ListWebhooks(anchorType string) (*ListWebhookResponse, error) {
 
 // DeleteWebhook - Deletes a webhook, by ID.
 // Endpoint: DELETE /v1/notifications/webhooks/ID
-func (c *Client) DeleteWebhook(webhookID string) error {
-	req, err := c.NewRequest(http.MethodDelete, fmt.Sprintf("%s/v1/notifications/webhooks/%s", c.APIBase, webhookID), nil)
+func (c *Client) DeleteWebhook(ctx context.Context, webhookID string) error {
+	req, err := c.NewRequest(ctx, http.MethodDelete, fmt.Sprintf("%s/v1/notifications/webhooks/%s", c.APIBase, webhookID), nil)
 	if err != nil {
 		return err
 	}
@@ -80,7 +81,7 @@ func (c *Client) DeleteWebhook(webhookID string) error {
 
 // VerifyWebhookSignature - Use this to verify the signature of a webhook recieved from paypal.
 // Endpoint: POST /v1/notifications/verify-webhook-signature
-func (c *Client) VerifyWebhookSignature(httpReq *http.Request, webhookID string) (*VerifyWebhookResponse, error) {
+func (c *Client) VerifyWebhookSignature(ctx context.Context, httpReq *http.Request, webhookID string) (*VerifyWebhookResponse, error) {
 	type verifyWebhookSignatureRequest struct {
 		AuthAlgo         string          `json:"auth_algo,omitempty"`
 		CertURL          string          `json:"cert_url,omitempty"`
@@ -111,7 +112,7 @@ func (c *Client) VerifyWebhookSignature(httpReq *http.Request, webhookID string)
 
 	response := &VerifyWebhookResponse{}
 
-	req, err := c.NewRequest("POST", fmt.Sprintf("%s%s", c.APIBase, "/v1/notifications/verify-webhook-signature"), verifyRequest)
+	req, err := c.NewRequest(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v1/notifications/verify-webhook-signature"), verifyRequest)
 	if err != nil {
 		return nil, err
 	}
@@ -122,3 +123,19 @@ func (c *Client) VerifyWebhookSignature(httpReq *http.Request, webhookID string)
 
 	return response, nil
 }
+
+// GetWebhooksEventTypes - Lists all webhook event types.
+// Endpoint: GET /v1/notifications/webhooks-event-types
+func (c *Client) GetWebhookEventTypes(ctx context.Context) (*WebhookEventTypesResponse, error) {
+	req, err := c.NewRequest(ctx, http.MethodGet, fmt.Sprintf("%s%s", c.APIBase, "/v1/notifications/webhooks-event-types"), nil)
+	q := req.URL.Query()
+
+	req.URL.RawQuery = q.Encode()
+	resp := &WebhookEventTypesResponse{}
+	if err != nil {
+		return nil, err
+	}
+
+	err = c.SendWithAuth(req, resp)
+	return resp, err
+}
diff --git a/webprofile.go b/webprofile.go
index 09b455c..66c3eec 100644
--- a/webprofile.go
+++ b/webprofile.go
@@ -1,6 +1,7 @@
 package paypal
 
 import (
+	"context"
 	"fmt"
 	"net/http"
 )
@@ -10,9 +11,9 @@ import (
 // Allows for the customisation of the payment experience
 //
 // Endpoint: POST /v1/payment-experience/web-profiles
-func (c *Client) CreateWebProfile(wp WebProfile) (*WebProfile, error) {
+func (c *Client) CreateWebProfile(ctx context.Context, wp WebProfile) (*WebProfile, error) {
 	url := fmt.Sprintf("%s%s", c.APIBase, "/v1/payment-experience/web-profiles")
-	req, err := c.NewRequest("POST", url, wp)
+	req, err := c.NewRequest(ctx, "POST", url, wp)
 	response := &WebProfile{}
 
 	if err != nil {
@@ -29,11 +30,11 @@ func (c *Client) CreateWebProfile(wp WebProfile) (*WebProfile, error) {
 // GetWebProfile gets an exists payment experience from Paypal
 //
 // Endpoint: GET /v1/payment-experience/web-profiles/<profile-id>
-func (c *Client) GetWebProfile(profileID string) (*WebProfile, error) {
+func (c *Client) GetWebProfile(ctx context.Context, profileID string) (*WebProfile, error) {
 	var wp WebProfile
 
 	url := fmt.Sprintf("%s%s%s", c.APIBase, "/v1/payment-experience/web-profiles/", profileID)
-	req, err := http.NewRequest("GET", url, nil)
+	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
 
 	if err != nil {
 		return &wp, err
@@ -53,11 +54,11 @@ func (c *Client) GetWebProfile(profileID string) (*WebProfile, error) {
 // GetWebProfiles retreieves web experience profiles from Paypal
 //
 // Endpoint: GET /v1/payment-experience/web-profiles
-func (c *Client) GetWebProfiles() ([]WebProfile, error) {
+func (c *Client) GetWebProfiles(ctx context.Context) ([]WebProfile, error) {
 	var wps []WebProfile
 
 	url := fmt.Sprintf("%s%s", c.APIBase, "/v1/payment-experience/web-profiles")
-	req, err := http.NewRequest("GET", url, nil)
+	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
 
 	if err != nil {
 		return wps, err
@@ -73,7 +74,7 @@ func (c *Client) GetWebProfiles() ([]WebProfile, error) {
 // SetWebProfile sets a web experience profile in Paypal with given id
 //
 // Endpoint: PUT /v1/payment-experience/web-profiles
-func (c *Client) SetWebProfile(wp WebProfile) error {
+func (c *Client) SetWebProfile(ctx context.Context, wp WebProfile) error {
 
 	if wp.ID == "" {
 		return fmt.Errorf("paypal: no ID specified for WebProfile")
@@ -81,7 +82,7 @@ func (c *Client) SetWebProfile(wp WebProfile) error {
 
 	url := fmt.Sprintf("%s%s%s", c.APIBase, "/v1/payment-experience/web-profiles/", wp.ID)
 
-	req, err := c.NewRequest("PUT", url, wp)
+	req, err := c.NewRequest(ctx, "PUT", url, wp)
 
 	if err != nil {
 		return err
@@ -97,11 +98,11 @@ func (c *Client) SetWebProfile(wp WebProfile) error {
 // DeleteWebProfile deletes a web experience profile from Paypal with given id
 //
 // Endpoint: DELETE /v1/payment-experience/web-profiles
-func (c *Client) DeleteWebProfile(profileID string) error {
+func (c *Client) DeleteWebProfile(ctx context.Context, profileID string) error {
 
 	url := fmt.Sprintf("%s%s%s", c.APIBase, "/v1/payment-experience/web-profiles/", profileID)
 
-	req, err := c.NewRequest("DELETE", url, nil)
+	req, err := c.NewRequest(ctx, "DELETE", url, nil)
 
 	if err != nil {
 		return err