diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index 160f2fa..46405fa 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -20,7 +20,7 @@ jobs:
       matrix:
         php-versions: ['7.3', '7.4', '8.0']
         databases: ['sqlite']
-        server-versions: ['master']
+        server-versions: ['stable22']
 
     name: php${{ matrix.php-versions }}-${{ matrix.databases }}
 
@@ -78,7 +78,7 @@ jobs:
       matrix:
         php-versions: ['7.3', '7.4', '8.0']
         databases: ['mysql']
-        server-versions: ['master']
+        server-versions: ['stable22']
 
     name: php${{ matrix.php-versions }}-${{ matrix.databases }}
 
@@ -145,7 +145,7 @@ jobs:
       matrix:
         php-versions: ['7.3', '7.4', '8.0']
         databases: ['pgsql']
-        server-versions: ['master']
+        server-versions: ['stable22']
 
     name: php${{ matrix.php-versions }}-${{ matrix.databases }}
 
@@ -214,7 +214,7 @@ jobs:
       matrix:
         php-versions: ['7.3', '7.4', '8.0']
         databases: ['oci']
-        server-versions: ['master']
+        server-versions: ['stable22']
 
     name: php${{ matrix.php-versions }}-${{ matrix.databases }}