diff --git a/composer.json b/composer.json
index 2364996..e7479a9 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
         }
     ],
     "require": {
-        "yiisoft/yii2": "*",
+        "yiisoft/yii2": ">=2.0.4",
         "swiftmailer/swiftmailer": "~5.0"
     },
     "autoload": {