diff --git a/.github/workflows/run-crt-test.yml b/.github/workflows/run-crt-test.yml
index 7c95941d..e168631c 100644
--- a/.github/workflows/run-crt-test.yml
+++ b/.github/workflows/run-crt-test.yml
@@ -6,6 +6,9 @@ on:
   pull_request:
     branches-ignore: [ master ]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest