diff --git a/composer.json b/composer.json
index 18e37a5..db0b5db 100644
--- a/composer.json
+++ b/composer.json
@@ -20,8 +20,8 @@
 	"require": {
 		"yiisoft/yii2" : "*",
 		"yiisoft/yii2-jui" : "*",
-		"bower-asset/fullcalendar" : "^3.8.1@stable",
-		"bower-asset/fullcalendar-scheduler" : "^1.9.4@stable"
+		"bower-asset/fullcalendar" : "^4.0.2@stable",
+		"bower-asset/fullcalendar-scheduler" : "^4.0.2@stable"
 	},
 	"require-dev": {
 		"codeception/codeception": "*"