diff --git a/composer.json b/composer.json
index 6718042..f9f1e71 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
         "symfony/process": "^2.5|^3.0"
     },
     "require-dev": {
-        "mockery/mockery": "^0.9.5",
+        "mockery/mockery": "^1.0",
         "phpunit/phpunit": "~5.0|~6.0",
         "scrutinizer/ocular": "^1.3"
     },