diff --git a/.github/workflows/size-limit.yml b/.github/workflows/size-limit.yml
index dcf2ee4b..ca0a665a 100644
--- a/.github/workflows/size-limit.yml
+++ b/.github/workflows/size-limit.yml
@@ -5,6 +5,10 @@ on:
     branches:
       - master
 
+permissions:
+  contents: read
+  pull-requests: write
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true