diff --git a/ci/d.yml b/ci/d.yml
index 6086681..c78e2ce 100644
--- a/ci/d.yml
+++ b/ci/d.yml
@@ -10,6 +10,9 @@ on:
   pull_request:
     branches: [ $default-branch ]
 
+permissions:
+  contents: read
+
 jobs:
   build: