diff --git a/.github/workflows/sync-branches.yml b/.github/workflows/sync-branches.yml
index 7f9d6bb4a9b..4522354dbf7 100644
--- a/.github/workflows/sync-branches.yml
+++ b/.github/workflows/sync-branches.yml
@@ -14,7 +14,7 @@ jobs:
     if: github.repository == 'dotnet/dotnet-monitor'
     strategy:
       matrix:
-        branch: ["release/8.0", "release/8.x"]
+        branch: ["release/8.0", "release/8.x", "release/9.x"]
     name: 'Sync non-code to ${{ matrix.branch }}'
     runs-on: ubuntu-latest
     permissions: