diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 21bcc0d..72eb97f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,5 +1,8 @@
 name: CI
 
+permissions:
+  contents: read
+
 on:
   push:
     branches: [ master ]