diff --git a/composer.json b/composer.json
index 0a5cce7..c0c3ca3 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,7 @@
         "php": ">=5.5.0"
     },
     "require-dev": {
-        "gpslab/cqrs": "dev-master",
+        "gpslab/cqrs": "~1.0",
         "gpslab/domain-event": "~1.6",
         "symfony/serializer": "~2.3|~3.0",
         "phpunit/phpunit": "~4.8",