diff --git a/src/Symfony/Bundle/DebugBundle/composer.json b/src/Symfony/Bundle/DebugBundle/composer.json
index 7b59b82c76..c5224da2e4 100644
--- a/src/Symfony/Bundle/DebugBundle/composer.json
+++ b/src/Symfony/Bundle/DebugBundle/composer.json
@@ -20,7 +20,7 @@
         "ext-xml": "*",
         "symfony/http-kernel": "~2.8|~3.0|~4.0",
         "symfony/twig-bridge": "~2.8|~3.0|~4.0",
-        "symfony/var-dumper": "~2.8|~3.0|~4.0"
+        "symfony/var-dumper": "~3.4|~4.0"
     },
     "require-dev": {
         "symfony/config": "~3.3|~4.0",