diff --git a/composer.json b/composer.json
index 646755b..4018a5d 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
     },
     "require": {
         "php": ">=5.3",
-        "react/event-loop": "^0.4 || ^0.3.5",
+        "react/event-loop": "^1.0 || ^0.5 || ^0.4 || ^0.3.5",
         "react/promise": "~2.1|~1.2"
     },
     "require-dev": {