diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 961efd79f3d26..28a74fbaf593a 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -27,6 +27,9 @@ permissions:
 jobs:
   tap_syntax:
     if: github.repository_owner == 'Homebrew'
+    strategy:
+      matrix:
+        branch: [master, stable]
     runs-on: ubuntu-22.04
     container:
       image: ghcr.io/homebrew/ubuntu22.04:master
@@ -40,6 +43,7 @@ jobs:
           core: true
           cask: false
           test-bot: true
+          stable: ${{ matrix.branch == 'stable' }}
 
       - name: Cache style cache
         uses: actions/cache@v4