diff --git a/.github/workflows/typecheck.yml b/.github/workflows/typecheck.yml
index 7bf58011d5..acd1fb3d64 100644
--- a/.github/workflows/typecheck.yml
+++ b/.github/workflows/typecheck.yml
@@ -3,6 +3,9 @@ name: "ʦ TypeScript"
 on:
   workflow_call:
 
+permissions:
+  contents: read
+
 jobs:
   typecheck:
     runs-on: ubuntu-latest