diff --git a/composer.json b/composer.json
index fda1beb..d574bf6 100644
--- a/composer.json
+++ b/composer.json
@@ -44,7 +44,7 @@
     "require-dev": {
         "sami/sami": "~1.0",
         "silex/silex": "~1.0",
-        "symfony/phpunit-bridge": "^5.0.4"
+        "symfony/phpunit-bridge": "^4.2.12 || ^5.0.4"
     },
     "autoload": {
         "psr-0": {