diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index 5d2aaa7bb..b44bc3e90 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -20,7 +20,7 @@ jobs:
       matrix:
         php-versions: ['7.4']
         databases: ['sqlite']
-        server-versions: ['master']
+        server-versions: ['master', 'stable25']
 
     name: php${{ matrix.php-versions }}-${{ matrix.databases }}-${{ matrix.server-versions }}
 
@@ -78,13 +78,9 @@ jobs:
       # do not stop on another job's failure
       fail-fast: false
       matrix:
-        php-versions: ['7.4', '8.0']
+        php-versions: ['7.4', '8.0', '8.1']
         databases: ['mysql']
-        server-versions: ['master']
-        include:
-          - php-versions: '8.1'
-            databases: 'mysql'
-            server-versions: master
+        server-versions: ['master', 'stable25']
 
     name: php${{ matrix.php-versions }}-${{ matrix.databases }}-${{ matrix.server-versions }}
 
@@ -148,7 +144,7 @@ jobs:
       matrix:
         php-versions: ['7.4']
         databases: ['pgsql']
-        server-versions: ['master']
+        server-versions: ['master', 'stable25']
 
     name: php${{ matrix.php-versions }}-${{ matrix.databases }}-${{ matrix.server-versions }}