diff --git a/_examples/logging/json-logger/main_test.go b/_examples/logging/json-logger/main_test.go
new file mode 100644
index 00000000..a63262ee
--- /dev/null
+++ b/_examples/logging/json-logger/main_test.go
@@ -0,0 +1,55 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"strings"
+	"sync"
+	"testing"
+
+	"github.com/kataras/golog"
+	"github.com/kataras/iris/v12"
+	"github.com/kataras/iris/v12/httptest"
+)
+
+func TestJSONLogger(t *testing.T) {
+	iters := 500
+
+	out := new(bytes.Buffer)
+
+	app := iris.New()
+	app.Logger().SetTimeFormat("")     // disable timestamps.
+	app.Logger().SetStacktraceLimit(1) // limit debug stacktrace to 1, show only the first caller.
+	app.Logger().SetOutput(out)
+
+	app.Logger().Handle(func(l *golog.Log) bool {
+		enc := json.NewEncoder(l.Logger.Printer) // you can change the output to a file as well.
+		err := enc.Encode(l)
+		return err == nil
+	})
+
+	app.Get("/ping", ping)
+
+	const expectedLogStr = `{"level":"debug","message":"Request path: /ping","fields":{"request_id":null},"stacktrace":[{"function":"json-logger/ping","source":"C:/mygopath/src/github.com/kataras/iris/_examples/logging/json-logger/main.go:82"}]}`
+	e := httptest.New(t, app, httptest.LogLevel("debug"))
+	wg := new(sync.WaitGroup)
+	wg.Add(iters)
+	for i := 0; i < iters; i++ {
+		go func() {
+			e.GET("/ping").Expect().Status(httptest.StatusOK).Body().Equal("pong")
+			wg.Done()
+		}()
+	}
+
+	wg.Wait()
+	expected := ""
+	for i := 0; i < iters; i++ {
+		expected += expectedLogStr + "\n"
+	}
+
+	got := out.String()
+	got = got[strings.Index(got, "{"):] // take only the json we care and after.
+	if expected != got {
+		t.Fatalf("expected:\n%s\nbut got:\n%s", expected, got)
+	}
+}
diff --git a/_examples/logging/request-logger/request-logger-file-json/main.go b/_examples/logging/request-logger/request-logger-file-json/main.go
index da18c256..67480502 100644
--- a/_examples/logging/request-logger/request-logger-file-json/main.go
+++ b/_examples/logging/request-logger/request-logger-file-json/main.go
@@ -61,8 +61,8 @@ func main() {
 	}()
 
 	r := newRequestLogger(logFile)
-
 	app.Use(r)
+
 	app.OnAnyErrorCode(r, func(ctx iris.Context) {
 		ctx.HTML("<h1> Error: Please try <a href ='/'> this </a> instead.</h1>")
 	})
diff --git a/_examples/logging/request-logger/request-logger-file/main.go b/_examples/logging/request-logger/request-logger-file/main.go
index 11293f0f..ac387963 100644
--- a/_examples/logging/request-logger/request-logger-file/main.go
+++ b/_examples/logging/request-logger/request-logger-file/main.go
@@ -9,7 +9,7 @@ import (
 	"github.com/kataras/iris/v12/middleware/logger"
 )
 
-const deleteFileOnExit = true
+const deleteFileOnExit = false
 
 func main() {
 	app := iris.New()
diff --git a/_examples/logging/rollbar/main.go b/_examples/logging/rollbar/main.go
index d2b37c11..0903f886 100644
--- a/_examples/logging/rollbar/main.go
+++ b/_examples/logging/rollbar/main.go
@@ -80,7 +80,7 @@ func main() {
 	// * a critical error message here
 	//
 	// custom.handler.file
-	// * C:/mygopath/src/github.com/kataras/iris/_examples/loggin/rollbar/main.go:76
+	// * C:/mygopath/src/github.com/kataras/iris/_examples/logging/rollbar/main.go:76
 	//
 	// custom.handler.name
 	// * main.panicMe
diff --git a/go.mod b/go.mod
index 436b7c19..0bb90e95 100644
--- a/go.mod
+++ b/go.mod
@@ -20,9 +20,9 @@ require (
 	github.com/iris-contrib/pongo2 v0.0.1
 	github.com/iris-contrib/schema v0.0.1
 	github.com/json-iterator/go v1.1.9
-	github.com/kataras/golog v0.0.16
+	github.com/kataras/golog v0.0.17
 	github.com/kataras/neffos v0.0.16
-	github.com/kataras/pio v0.0.6
+	github.com/kataras/pio v0.0.7
 	github.com/kataras/sitemap v0.0.5
 	github.com/klauspost/compress v1.10.6
 	github.com/mediocregopher/radix/v3 v3.5.1