diff --git a/composer.json b/composer.json
index df6b18f..d4f94d3 100644
--- a/composer.json
+++ b/composer.json
@@ -6,7 +6,7 @@
     "require": {
         "php": "> 5.3.0",
         "guzzle/guzzle": "3.9.2",
-        "symfony/event-dispatcher": "2.7"
+        "symfony/event-dispatcher": "^2.7|^3.0"
     },
     "require-dev": {
         "squizlabs/php_codesniffer": "~1.5.2",