diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b5a9432..708d457 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,6 +8,9 @@ on:
   pull_request:
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   flake-check:
     name: Flake Check