diff --git a/composer.json b/composer.json
index 9f81b84..bb6ebe0 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
     "require": {
         "php": ">=5.4.0",
         "ezimuel/guzzlestreams": "^3.0.1",
-        "react/promise": "~2.0"
+        "react/promise": "^2.0||^3.0"
     },
     "require-dev": {
         "ext-curl": "*",