diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f1e0cef..60bb1d5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -3,6 +3,9 @@
 
 name: CI
 
+permissions:
+  contents: read
+
 on:
   push:
     branches: [main]