diff --git a/.github/workflows/pr-checks.yml b/.github/workflows/pr-checks.yml
index f90a783..d9989e1 100644
--- a/.github/workflows/pr-checks.yml
+++ b/.github/workflows/pr-checks.yml
@@ -13,6 +13,9 @@ on:
   pull_request:
     branches: [main]
 
+permissions:
+  contents: read
+
 jobs:
   # ── Python Checks ──────────────────────────────────────────────────
   python-checks: