diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index fee2430..65513be 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -11,6 +11,8 @@
 #
 
 name: CI
+permissions:
+  contents: read
 
 on:
   pull_request: