diff --git a/demo-cache/pom.xml b/demo-cache/pom.xml
index 33162fd..8100d25 100644
--- a/demo-cache/pom.xml
+++ b/demo-cache/pom.xml
@@ -7,6 +7,7 @@
     <artifactId>spring-boot-demo</artifactId>
     <version>1.0.0-SNAPSHOT</version>
   </parent>
+
   <modelVersion>4.0.0</modelVersion>
 
   <artifactId>demo-cache</artifactId>
diff --git a/demo-multi-datasource/pom.xml b/demo-multi-datasource/pom.xml
index e56a288..5b5fac9 100644
--- a/demo-multi-datasource/pom.xml
+++ b/demo-multi-datasource/pom.xml
@@ -7,6 +7,7 @@
     <artifactId>spring-boot-demo</artifactId>
     <version>1.0.0-SNAPSHOT</version>
   </parent>
+
   <modelVersion>4.0.0</modelVersion>
 
   <artifactId>demo-multi-datasource</artifactId>
diff --git a/demo-nosql/pom.xml b/demo-nosql/pom.xml
index 1a8fb5c..1ea16de 100644
--- a/demo-nosql/pom.xml
+++ b/demo-nosql/pom.xml
@@ -7,6 +7,7 @@
     <artifactId>spring-boot-demo</artifactId>
     <version>1.0.0-SNAPSHOT</version>
   </parent>
+
   <modelVersion>4.0.0</modelVersion>
 
   <artifactId>demo-nosql</artifactId>
diff --git a/demo-orm/pom.xml b/demo-orm/pom.xml
index c4836ff..4d2f958 100644
--- a/demo-orm/pom.xml
+++ b/demo-orm/pom.xml
@@ -7,6 +7,7 @@
     <artifactId>spring-boot-demo</artifactId>
     <version>1.0.0-SNAPSHOT</version>
   </parent>
+
   <modelVersion>4.0.0</modelVersion>
 
   <artifactId>demo-orm</artifactId>
diff --git a/demo-task/pom.xml b/demo-task/pom.xml
index cd24082..02843d2 100644
--- a/demo-task/pom.xml
+++ b/demo-task/pom.xml
@@ -7,6 +7,7 @@
     <artifactId>spring-boot-demo</artifactId>
     <version>1.0.0-SNAPSHOT</version>
   </parent>
+
   <modelVersion>4.0.0</modelVersion>
 
   <artifactId>demo-task</artifactId>