diff --git a/composer.json b/composer.json
index df6397c..02f6619 100644
--- a/composer.json
+++ b/composer.json
@@ -21,12 +21,14 @@
 	},
 	"require-dev": {
 		"yiisoft/yii2-codeception": "*",
-		"codeception/codeception": "*",
-		"codeception/specify": "*",
-		"codeception/verify": "*",
 		"yiisoft/yii2-debug": "*",
 		"yiisoft/yii2-gii": "*"
 	},
+	"suggest": {
+		"codeception/codeception": "1.8.*@dev",
+		"codeception/specify": "*",
+		"codeception/verify": "*"
+	},
 	"scripts": {
 		"post-create-project-cmd": [
 			"yii\\composer\\Installer::setPermission"