diff --git a/composer.json b/composer.json
index 7c0bf08..b18335b 100644
--- a/composer.json
+++ b/composer.json
@@ -39,7 +39,7 @@
         "mockery/mockery": "^0.9.4",
         "goaop/framework": "1.0.0-alpha.2",
         "codeception/aspect-mock": "1.0.0",
-        "php-mock/php-mock-phpunit": "^1.1"
+        "php-mock/php-mock-phpunit": "^0.3|^1.1"
     },
     "suggest": {
         "ircmaxell/random-lib": "Provides RandomLib for use with the RandomLibAdapter",