diff --git a/composer.json b/composer.json
index 3d7e6a9..4b96140 100644
--- a/composer.json
+++ b/composer.json
@@ -20,9 +20,6 @@
     "require-dev": {
         "phpunit/phpunit":"^4.8.35|^5.4.3"
     },
-    "conflict": {
-        "phpunit/php-timer": ">=2"
-    },
     "autoload": {
         "classmap": [
             "src/"