diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 124f8023..f1971efc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,8 @@ on:
   schedule:
     - cron: '0 0 * * 3'
 
+permissions: read-all
+
 jobs:
   build: