diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 37ab2f6..cb3de87 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -9,6 +9,9 @@ on:
   # allow manual runs:
   workflow_dispatch: {}
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest