diff --git a/composer.json b/composer.json
index 3b06ec0..db361a5 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "~6.0 || ~7.0",
-        "doctrine/dbal": "~2.0"
+        "doctrine/dbal": "~4.0"
     },
     "autoload": {
         "psr-4": {