diff --git a/Chapter9-2-2/consumer/pom.xml b/Chapter9-2-2/consumer/pom.xml
index e3630d29c8f7fac0a5e3dceea95a7cb601cb5146..8d47141e21b80e6bf70ada8eacfb80e759af2c48 100644
--- a/Chapter9-2-2/consumer/pom.xml
+++ b/Chapter9-2-2/consumer/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	<modelVersion>4.0.0</modelVersion>
+	<modelVersion>4.0.0.1</modelVersion>
 
 	<groupId>com.didispace</groupId>
 	<artifactId>consumer</artifactId>