diff --git a/2.1.x/chapter2-3/pom.xml b/2.1.x/chapter2-3/pom.xml
index 284c9d0d..b63ee0ce 100644
--- a/2.1.x/chapter2-3/pom.xml
+++ b/2.1.x/chapter2-3/pom.xml
@@ -29,7 +29,7 @@
 		<dependency>
 			<groupId>com.spring4all</groupId>
 			<artifactId>swagger-spring-boot-starter</artifactId>
-			<version>1.9.0.RELEASE</version>
+			<version>2.0.0.RELEASE</version>
 		</dependency>
 
 		<dependency>