diff --git a/composer.json b/composer.json
index 8e29060..8e34534 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
 		"behat/mink-selenium2-driver": "~1.1@dev",
 		"symfony/event-dispatcher": "~2.4",
 		"pimple/pimple": "~2.0@dev",
-		"phpunit/phpunit": "~3.7|~4.0"
+		"phpunit/phpunit": ">=3.7.8"
 	},
 
 	"require-dev": {