diff --git a/.github/workflows/REUSABLE_backend.yml b/.github/workflows/REUSABLE_backend.yml
index 87cbb483fe..86a009743d 100644
--- a/.github/workflows/REUSABLE_backend.yml
+++ b/.github/workflows/REUSABLE_backend.yml
@@ -161,7 +161,7 @@ jobs:
           MYSQL_PASSWORD: ${{ env.DB_PASSWORD }}
           MYSQL_ROOT_PASSWORD: root
         ports:
-          - 13306
+          - 13306:13306
         options: --health-cmd="mysqladmin ping" --health-interval=10s --health-timeout=5s --health-retries=10
       postgres:
         image: ${{ matrix.driver == 'pgsql' && matrix.service || '' }}
@@ -205,6 +205,7 @@ jobs:
         run: |
           sudo systemctl start mysql
           mysql -uroot -proot -e 'CREATE DATABASE flarum_test;' --port 13306
+          mysql -uroot -proot -e 'GRANT ALL PRIVILEGES ON flarum_test.* TO "${{ env.DB_USERNAME }}"@"%" IDENTIFIED BY "${{ env.DB_PASSWORD }}";' --port 13306
 
       - name: Install Composer dependencies
         run: composer install