diff --git a/.github/workflows/sanity_check.yml b/.github/workflows/sanity_check.yml
index f16b79d4d6c..6ee53ce1b62 100644
--- a/.github/workflows/sanity_check.yml
+++ b/.github/workflows/sanity_check.yml
@@ -1,5 +1,8 @@
 name: Check buck targets and code format
 on: [push, pull_request]
+permissions:
+  contents: read
+
 jobs:
   check:
     name: Check TARGETS file and code format