diff --git a/.github/workflows/typecheck.yml b/.github/workflows/typecheck.yml
index 881bbaf..166409f 100644
--- a/.github/workflows/typecheck.yml
+++ b/.github/workflows/typecheck.yml
@@ -6,6 +6,9 @@ on:
       - main
   pull_request:
 
+permissions:
+  contents: read
+
 jobs:
   typecheck:
     name: Typecheck