diff --git a/composer.json b/composer.json
index 0a7e1e4..f134906 100644
--- a/composer.json
+++ b/composer.json
@@ -5,11 +5,11 @@
     "license": "MIT",
     "require": {
         "php": ">=5.3.8",
+        "react/event-loop": "^1.0 || ^0.5 || ^0.4 || ^0.3",
         "evenement/evenement": "^2.0|^1.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^5.0 || ^4.8.10",
-        "react/event-loop": "^1.0 || ^0.5 || ^0.4 || ^0.3",
         "clue/stream-filter": "~1.2"
     },
     "suggest": {