1 files changed, 3 insertions, 0 deletions
diff --git a/composer.json b/composer.json
index 444a6de..33613fc 100644
--- a/composer.json
+++ b/composer.json
@@ -17,5 +17,8 @@
     },
     "require": {
         "php": ">=5.3.3"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^5.0"
     }
 }