diff --git a/.github/workflows/prettier.yml b/.github/workflows/prettier.yml
index 60446c8d..cb3ee8a2 100644
--- a/.github/workflows/prettier.yml
+++ b/.github/workflows/prettier.yml
@@ -10,6 +10,10 @@ on:
       - master
       - main
 
+permissions:
+  contents: read
+  actions: write
+
 jobs:
   check:
     # available images: https://github.com/actions/runner-images#available-images