diff --git a/.github/workflows/pr-checks.yml b/.github/workflows/pr-checks.yml
index 33fa9e9..d850cc5 100644
--- a/.github/workflows/pr-checks.yml
+++ b/.github/workflows/pr-checks.yml
@@ -2,6 +2,9 @@ name: Pull request CI checks
 
 on: [pull_request]
 
+permissions:
+  contents: read
+
 jobs:
   lint:
     name: Spotless check