diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7c84c8e3..9eaca0bb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: [master]
 
+permissions:
+  contents: read
+
 jobs:
 
   test: