diff --git a/composer.json b/composer.json
index 97b271de8..e70058719 100644
--- a/composer.json
+++ b/composer.json
@@ -38,6 +38,7 @@
     },
     "conflict": {
         "symfony/console": "2.8.38"
+        "symfony/phpunit-bridge": "3.4.40"
     },
     "require-dev": {
         "symfony/phpunit-bridge": "^3.4",