diff --git a/.github/workflows/infection.yml b/.github/workflows/infection.yml
index 644e515..fe3e7e1 100644
--- a/.github/workflows/infection.yml
+++ b/.github/workflows/infection.yml
@@ -7,12 +7,22 @@ jobs:
     name: ci
     runs-on: ubuntu-latest
 
+    services:
+      postgres:
+        image: postgres
+        env:
+          POSTGRES_USER: 'postgres'
+          POSTGRES_HOST_AUTH_METHOD: 'trust'
+        options: --health-cmd="pg_isready" --health-interval 10s --health-timeout 5s --health-retries 5
+        ports:
+          - 5432:5432
+
     strategy:
       fail-fast: false
       matrix:
-        moodle-branch: ['main']
-        php: ['8.3']
-        database: ['mysqli']
+        moodle-branch: [main]
+        php: [8.3]
+        database: [pgsql]
 
     steps:
       - name: checkout plugin
@@ -34,10 +44,9 @@ jobs:
            echo $(cd ci/bin; pwd) >> $GITHUB_PATH
            echo $(cd ci/vendor/bin; pwd) >> $GITHUB_PATH
            sudo locale-gen en_AU.UTF-8
-           sudo systemctl start mysql.service
 
       - name: install Moodle
-        run: moodle-plugin-ci install --db-user=root --db-pass=root --db-host=127.0.0.1 --plugin this-plugin
+        run: moodle-plugin-ci install --db-host=127.0.0.1 --plugin this-plugin
         env:
           DB: ${{ matrix.database }}
           MOODLE_BRANCH: ${{ matrix.moodle-branch }}