diff --git a/.github/workflows/moodle-plugin-ci.yml b/.github/workflows/moodle-plugin-ci.yml
index bf554fa..e57f4d3 100644
--- a/.github/workflows/moodle-plugin-ci.yml
+++ b/.github/workflows/moodle-plugin-ci.yml
@@ -8,7 +8,7 @@ jobs:
 
     services:
       postgres:
-        image: postgres
+        image: postgres:13
         env:
           POSTGRES_USER: 'postgres'
           POSTGRES_HOST_AUTH_METHOD: 'trust'
@@ -16,7 +16,7 @@ jobs:
           - 5432:5432
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 3
       mariadb:
-        image: mariadb
+        image: mariadb:10.6
         env:
           MYSQL_USER: 'root'
           MYSQL_ALLOW_EMPTY_PASSWORD: "true"
@@ -28,6 +28,27 @@ jobs:
       fail-fast: false
       matrix:
         include:
+          - php: 8.3
+            moodle-branch: MOODLE_404_STABLE
+            database: pgsql
+          - php: 8.3
+            moodle-branch: MOODLE_404_STABLE
+            database: mariadb
+
+          - php: 8.2
+            moodle-branch: MOODLE_403_STABLE
+            database: pgsql
+          - php: 8.2
+            moodle-branch: MOODLE_403_STABLE
+            database: mariadb
+
+          - php: 8.1
+            moodle-branch: MOODLE_402_STABLE
+            database: pgsql
+          - php: 8.1
+            moodle-branch: MOODLE_402_STABLE
+            database: mariadb
+
           - php: 8.0
             moodle-branch: MOODLE_401_STABLE
             database: pgsql
@@ -63,16 +84,9 @@ jobs:
             moodle-branch: MOODLE_311_STABLE
             database: mariadb
 
-          - php: 7.3
-            moodle-branch: MOODLE_311_STABLE
-            database: pgsql
-          - php: 7.3
-            moodle-branch: MOODLE_311_STABLE
-            database: mariadb
-
     steps:
       - name: Check out repository code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: plugin
 
@@ -86,7 +100,7 @@ jobs:
 
       - name: Initialise moodle-plugin-ci
         run: |
-          composer create-project -n --no-dev --prefer-dist moodlehq/moodle-plugin-ci ci ^3
+          composer create-project -n --no-dev --prefer-dist moodlehq/moodle-plugin-ci ci ^4
           echo $(cd ci/bin; pwd) >> $GITHUB_PATH
           echo $(cd ci/vendor/bin; pwd) >> $GITHUB_PATH
           sudo locale-gen en_AU.UTF-8
@@ -106,11 +120,6 @@ jobs:
         if: ${{ always() }}
         run: moodle-plugin-ci phplint
 
-      - name: PHP Copy/Paste Detector
-        continue-on-error: true # This step will show errors but will not fail
-        if: ${{ always() }}
-        run: moodle-plugin-ci phpcpd
-
       - name: PHP Mess Detector
         continue-on-error: true # This step will show errors but will not fail
         if: ${{ always() }}
@@ -146,4 +155,4 @@ jobs:
 
       - name: Behat features
         if: ${{ always() }}
-        run: moodle-plugin-ci behat --profile chrome
\ No newline at end of file
+        run: moodle-plugin-ci behat --profile chrome