diff --git a/composer.json b/composer.json
index 37e0766..9afd3cc 100644
--- a/composer.json
+++ b/composer.json
@@ -5,7 +5,7 @@
     "require": {
         "php": "^7.0",
         "ext-bcmath": "^7.0",
-        "symfony/framework-bundle": "^3.4",
+        "symfony/framework-bundle": "^3.4|^4.0",
         "moneyphp/money": "^3.1",
         "doctrine/orm": "^2.5",
         "doctrine/doctrine-bundle": "^1.5"