diff --git a/composer.json b/composer.json
index b6b466fa..255a7669 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
         }
     },
     "require-dev": {
-        "phpunit/phpunit": "4.3.*"
+        "phpunit/phpunit": "~4.3"
     },
     "scripts": {
         "test": "phpunit"