diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index e7783e7..2036fdb 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -4,6 +4,9 @@ on:
   workflow_call:
   push:
 
+permissions:
+  contents: read
+
 jobs:
   check:
     runs-on: ubuntu-latest