diff --git a/common-tools/pom.xml b/common-tools/pom.xml
index 72c4626..d8818ce 100644
--- a/common-tools/pom.xml
+++ b/common-tools/pom.xml
@@ -10,6 +10,7 @@
   <modelVersion>4.0.0</modelVersion>
 
   <artifactId>common-tools</artifactId>
+  <version>1.0.0-SNAPSHOT</version>
   <packaging>jar</packaging>
 
   <name>common-tools</name>
diff --git a/demo-helloworld/pom.xml b/demo-helloworld/pom.xml
index 2f7040e..f22374d 100644
--- a/demo-helloworld/pom.xml
+++ b/demo-helloworld/pom.xml
@@ -10,6 +10,7 @@
   <modelVersion>4.0.0</modelVersion>
 
   <artifactId>demo-helloworld</artifactId>
+  <version>1.0.0-SNAPSHOT</version>
   <packaging>jar</packaging>
 
   <name>demo-helloworld</name>
diff --git a/demo-properties/pom.xml b/demo-properties/pom.xml
index 5ab6e17..f7a6ec2 100644
--- a/demo-properties/pom.xml
+++ b/demo-properties/pom.xml
@@ -1,6 +1,12 @@
 <?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">
+  <parent>
+    <groupId>com.xkcoding</groupId>
+    <artifactId>spring-boot-demo</artifactId>
+    <version>1.0.0-SNAPSHOT</version>
+  </parent>
+
   <modelVersion>4.0.0</modelVersion>
 
   <artifactId>demo-properties</artifactId>
@@ -10,12 +16,6 @@
   <name>demo-properties</name>
   <description>Demo project for Spring Boot</description>
 
-  <parent>
-    <groupId>com.xkcoding</groupId>
-    <artifactId>spring-boot-demo</artifactId>
-    <version>1.0.0-SNAPSHOT</version>
-  </parent>
-
   <properties>
     <java.version>17</java.version>
   </properties>
diff --git a/pom.xml b/pom.xml
index 09cd2ce..490c868 100644
--- a/pom.xml
+++ b/pom.xml
@@ -7,6 +7,7 @@
   <groupId>com.xkcoding</groupId>
   <artifactId>spring-boot-demo</artifactId>
   <version>1.0.0-SNAPSHOT</version>
+
   <modules>
     <module>common-tools</module>
     <module>demo-helloworld</module>