diff --git a/composer.json b/composer.json
index 2af583d..5a9fed8 100644
--- a/composer.json
+++ b/composer.json
@@ -6,8 +6,7 @@
     "license": "BSD-3-Clause",
     "minimum-stability": "stable",
     "require": {
-        "php": ">=5.4.0",
-        "yiisoft/yii2": ">=2.0.9",
+        "yiisoft/yii2": "^2.0.14.2",
         "yiisoft/yii2-bootstrap": "*",
         "fxp/composer-asset-plugin": "*",
         "kartik-v/yii2-widgets": "^3.4",