diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index b0ddaead..c818765b 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -347,7 +347,7 @@ jobs:
 
       - name: Post mutation summary to pull request
         continue-on-error: true
-        uses: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b # v7.1.0
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           script: |
             const { upsertMutationSummaryComment } = require('./scripts/update-mutation-pr-comment.js');