diff --git a/README.md b/README.md
index 7fa68ef..287cbc4 100644
--- a/README.md
+++ b/README.md
@@ -3,30 +3,34 @@
 ---
 ## What's this?
 A base project of a blog-type web application.
+
 #### by using  
-- [Spring Framework 5.2.x](https://spring.io/projects/spring-framework)
-- [Spring Data JPA 2.3.x](https://spring.io/projects/spring-data-jpa)
-- [Hibernate 5.4.x](http://hibernate.org/)
-- [jackson 2.11.0](https://github.com/FasterXML/jackson)
+- [Spring Framework 5.3.x](https://spring.io/projects/spring-framework)
+- [Spring Data JPA 2.7.x](https://spring.io/projects/spring-data-jpa)
+- [Hibernate 5.6.x](http://hibernate.org/)
+- [jackson 2.13.0](https://github.com/FasterXML/jackson)
 - [Apache Tiles 3.0.x](https://tiles.apache.org/)
 - [Lombok 1.18.x](https://projectlombok.org/)
 - [Logback 1.2.x](http://logback.qos.ch/)
-- [Java 8](https://www.oracle.com/)
+- [Java 11](https://openjdk.org/)
 
 ---
 ## How to run the application on your local?
 - get [Apache Maven](http://maven.apache.org/).
 - build this project by using command line.
+
 ```bash
 > cd { path to this README.md directory. }
 > mvn compile
 > mvn install
 ```
 - move to the directory of webapp.
+
 ```bash
 > cd webapp
 ```
 - run the web application by using jetty plugin.
+
 ```bash
 > mvn jetty:run
 ```
@@ -37,10 +41,6 @@ to stop the application hit ctrl + c
 ## Repository on Github.
 [hiroxpepe/expt-blog](https://github.com/hiroxpepe/expt-blog)
 
----
-## Running on Heroku.
-http://expt-blog.herokuapp.com/
-
 ---
 ## Author
 [hiroxpepe](mailto:hiroxpepe@gmail.com)
diff --git a/model/pom.xml b/model/pom.xml
index 686ef99..f5a0c2b 100644
--- a/model/pom.xml
+++ b/model/pom.xml
@@ -10,21 +10,17 @@
     <name>model</name>
 
     <properties>
-        <expt-blog.version>${version}</expt-blog.version>
-        <spring.data.jpa.version>2.3.0.RELEASE</spring.data.jpa.version>
-        <spring.version>5.2.6.RELEASE</spring.version>
-        <hibernate.version>5.4.17.Final</hibernate.version>
-        <lombok.version>1.18.12</lombok.version>
-        <slf4j.version>1.7.30</slf4j.version>
-        <logback.version>1.2.3</logback.version>
-        <java.version>1.8</java.version>
+        <spring.data.jpa.version>2.7.7</spring.data.jpa.version>
+        <spring.version>5.3.25</spring.version>
+        <hibernate.version>5.6.14.Final</hibernate.version>
+        <lombok.version>1.18.24</lombok.version>
+        <slf4j.version>1.7.36</slf4j.version>
+        <logback.version>1.2.11</logback.version>
+        <java.version>11</java.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
     <dependencies>
-        <!--///////////////////////////////////////////////////////////////////////////-->
-        <!-- USER LIB -->
-
         <!--///////////////////////////////////////////////////////////////////////////-->
         <!-- OSS LIB -->
 
@@ -133,35 +129,8 @@
             <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
-
     </dependencies>
 
-    <pluginRepositories>
-        <pluginRepository>
-            <id>central</id>
-            <name>Central Repository</name>
-            <url>https://repo.maven.apache.org/maven2</url>
-            <layout>default</layout>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-            <releases>
-                <updatePolicy>never</updatePolicy>
-            </releases>
-        </pluginRepository>
-    </pluginRepositories>
-    <repositories>
-        <repository>
-            <id>central</id>
-            <name>Central Repository</name>
-            <url>https://repo.maven.apache.org/maven2</url>
-            <layout>default</layout>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-        </repository>
-    </repositories>
-
     <build>
         <!-- Name of the generated JAR file -->
         <finalName>${name}-${version}</finalName>
diff --git a/mvc/pom.xml b/mvc/pom.xml
index 23f1fbe..4913ee6 100644
--- a/mvc/pom.xml
+++ b/mvc/pom.xml
@@ -10,12 +10,12 @@
     <name>mvc</name>
 
     <properties>
-        <spring.version>5.2.6.RELEASE</spring.version>
+        <spring.version>5.3.25</spring.version>
         <dozer.version>5.5.1</dozer.version>
-        <lombok.version>1.18.12</lombok.version>
-        <slf4j.version>1.7.30</slf4j.version>
-        <logback.version>1.2.3</logback.version>
-        <java.version>1.8</java.version>
+        <lombok.version>1.18.24</lombok.version>
+        <slf4j.version>1.7.36</slf4j.version>
+        <logback.version>1.2.11</logback.version>
+        <java.version>11</java.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
@@ -135,32 +135,6 @@
         </dependency>
     </dependencies>
 
-    <pluginRepositories>
-        <pluginRepository>
-            <id>central</id>
-            <name>Central Repository</name>
-            <url>https://repo.maven.apache.org/maven2</url>
-            <layout>default</layout>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-            <releases>
-                <updatePolicy>never</updatePolicy>
-            </releases>
-        </pluginRepository>
-    </pluginRepositories>
-    <repositories>
-        <repository>
-            <id>central</id>
-            <name>Central Repository</name>
-            <url>https://repo.maven.apache.org/maven2</url>
-            <layout>default</layout>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-        </repository>
-    </repositories>
-
     <build>
         <!-- Name of the generated JAR file -->
         <finalName>${name}-${version}</finalName>
@@ -177,5 +151,4 @@
             </plugin>
         </plugins>
     </build>
-
 </project>
diff --git a/pom.xml b/pom.xml
index 1f50140..3c84a9c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,8 +10,7 @@
     <name>project</name>
 
     <properties>
-        <exptblog.version>${version}</exptblog.version>
-        <java.version>1.8</java.version>
+        <java.version>11</java.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
@@ -22,32 +21,6 @@
         <module>model</module>
     </modules>
 
-    <pluginRepositories>
-        <pluginRepository>
-            <id>central</id>
-            <name>Central Repository</name>
-            <url>https://repo.maven.apache.org/maven2</url>
-            <layout>default</layout>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-            <releases>
-                <updatePolicy>never</updatePolicy>
-            </releases>
-        </pluginRepository>
-    </pluginRepositories>
-    <repositories>
-        <repository>
-            <id>central</id>
-            <name>Central Repository</name>
-            <url>https://repo.maven.apache.org/maven2</url>
-            <layout>default</layout>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-        </repository>
-    </repositories>
-
     <build>
         <plugins>
             <plugin>
diff --git a/service/pom.xml b/service/pom.xml
index 9b0deea..f434cc6 100644
--- a/service/pom.xml
+++ b/service/pom.xml
@@ -10,11 +10,11 @@
     <name>service</name>
 
     <properties>
-        <spring.version>5.2.6.RELEASE</spring.version>
-        <lombok.version>1.18.12</lombok.version>
-        <slf4j.version>1.7.30</slf4j.version>
-        <logback.version>1.2.3</logback.version>
-        <java.version>1.8</java.version>
+        <spring.version>5.3.25</spring.version>
+        <lombok.version>1.18.24</lombok.version>
+        <slf4j.version>1.7.36</slf4j.version>
+        <logback.version>1.2.11</logback.version>
+        <java.version>11</java.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
@@ -107,32 +107,6 @@
 
     </dependencies>
 
-    <pluginRepositories>
-        <pluginRepository>
-            <id>central</id>
-            <name>Central Repository</name>
-            <url>https://repo.maven.apache.org/maven2</url>
-            <layout>default</layout>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-            <releases>
-                <updatePolicy>never</updatePolicy>
-            </releases>
-        </pluginRepository>
-    </pluginRepositories>
-    <repositories>
-        <repository>
-            <id>central</id>
-            <name>Central Repository</name>
-            <url>https://repo.maven.apache.org/maven2</url>
-            <layout>default</layout>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-        </repository>
-    </repositories>
-
     <build>
         <!-- Name of the generated JAR file -->
         <finalName>${name}-${version}</finalName>
diff --git a/webapp/pom.xml b/webapp/pom.xml
index c4be0b7..1e56a6b 100644
--- a/webapp/pom.xml
+++ b/webapp/pom.xml
@@ -10,9 +10,9 @@
     <name>webapp</name>
 
     <properties>
-        <jackson.version>2.11.0</jackson.version>
+        <jackson.version>2.13.5</jackson.version>
         <tiles.version>3.0.8</tiles.version>
-        <java.version>1.8</java.version>
+        <java.version>11</java.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
@@ -62,35 +62,8 @@
             <artifactId>tiles-jsp</artifactId>
             <version>${tiles.version}</version>
         </dependency>
-
     </dependencies>
 
-    <pluginRepositories>
-        <pluginRepository>
-            <id>central</id>
-            <name>Central Repository</name>
-            <url>https://repo.maven.apache.org/maven2</url>
-            <layout>default</layout>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-            <releases>
-                <updatePolicy>never</updatePolicy>
-            </releases>
-        </pluginRepository>
-    </pluginRepositories>
-    <repositories>
-        <repository>
-            <id>central</id>
-            <name>Central Repository</name>
-            <url>https://repo.maven.apache.org/maven2</url>
-            <layout>default</layout>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-        </repository>
-    </repositories>
-
     <build>
         <!-- Name of the generated WAR file -->
         <finalName>${name}-${version}</finalName>