diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6ac187d..f998e4c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,4 +10,8 @@ jobs:
     name: CI
     uses: silverstripe/gha-ci/.github/workflows/ci.yml@v1
     with:
-      simple_matrix: true
+      dynamic_matrix: false
+      extra_jobs: |
+        - php: '8.1'
+          db: mysql80
+          phpunit: true