diff --git a/pom.xml b/pom.xml
index 59384d5..48b7915 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.2.2.RELEASE</version>
+		<version>4.0.0</version>
 	</parent>
 
 	<groupId>net.codejava</groupId>