diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c2e2ce5..85f499e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,6 +4,9 @@ on:
             - main
     pull_request:
 
+permissions:
+    contents: read
+
 concurrency:
     group: ${{ github.workflow }}-${{ github.ref }}
     cancel-in-progress: true