diff --git a/.github/workflows/size.yml b/.github/workflows/size.yml
index b5a2e9695..965a2f429 100644
--- a/.github/workflows/size.yml
+++ b/.github/workflows/size.yml
@@ -85,7 +85,7 @@ jobs:
         path: /tmp/ot-size-report
 
     - name: Post Report
-      uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea
+      uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd
       id: post-report
       with:
         script: |