diff --git a/.github/workflows/backend-ci.yml b/.github/workflows/backend-ci.yml
index 2f2e3ce..060ed16 100644
--- a/.github/workflows/backend-ci.yml
+++ b/.github/workflows/backend-ci.yml
@@ -10,6 +10,9 @@ on:
     paths:
       - "backend/**"
 
+permissions:
+  contents: read
+
 jobs:
   test:
     runs-on: ubuntu-latest