diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 4a888d3e..91963669 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -4,6 +4,9 @@ on:
     branches: [ master ]
   pull_request:
     branches: [ master ]
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest