diff --git a/.github/workflows/moodle-ci.yml b/.github/workflows/moodle-ci.yml
index 0f579ca..ae497c5 100644
--- a/.github/workflows/moodle-ci.yml
+++ b/.github/workflows/moodle-ci.yml
@@ -111,6 +111,12 @@ jobs:
         php: [ '8.2', '8.3' ]
         moodle-branch: [ 'MOODLE_402_STABLE', 'MOODLE_403_STABLE', 'MOODLE_404_STABLE' ]
         database: ['mariadb', 'pgsql']
+        # for phpunit
+        exclude:
+          - php: '8.3'
+            moodle-branch: 'MOODLE_402_STABLE'
+          - php: '8.3'
+            moodle-branch: 'MOODLE_403_STABLE'
 
     steps:
       - name: Start MariaDB