diff --git a/composer.json b/composer.json
index 937dd74..8505d0d 100644
--- a/composer.json
+++ b/composer.json
@@ -25,6 +25,6 @@
   "require-dev": {
     "symfony/var-dumper": "*",
     "phpunit/phpunit": "^5.2",
-    "symfony/http-foundation": "^3.3"
+    "symfony/http-foundation": "^3.3 || ^4.0"
   }
 }