diff --git a/core/lib/Drupal/Component/EventDispatcher/composer.json b/core/lib/Drupal/Component/EventDispatcher/composer.json
index 2774728def..f10d4f422c 100644
--- a/core/lib/Drupal/Component/EventDispatcher/composer.json
+++ b/core/lib/Drupal/Component/EventDispatcher/composer.json
@@ -7,7 +7,7 @@
   "require": {
     "php": ">=5.5.9",
     "symfony/dependency-injection": ">=2.8 <4.0.0",
-    "symfony/event-dispatcher": ">=3.0 <4.0.0"
+    "symfony/event-dispatcher": ">=3.4 <4.0.0"
   },
   "autoload": {
     "psr-4": {