diff --git a/composer.json b/composer.json
index 27c00d5..81134b0 100644
--- a/composer.json
+++ b/composer.json
@@ -36,7 +36,7 @@
         "nilportugues/sql-query-formatter": "~1.2"
     },
     "require-dev": {
-        "phpunit/phpunit": "5.*",
+        "phpunit/phpunit": "4.*",
         "fabpot/php-cs-fixer": "~1.9",
         "nilportugues/php_backslasher": "~0.2"
     },