diff --git a/README.md b/README.md
index 6b0c11d..488c345 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,8 @@
 <a href="http://search.maven.org/#search%7Cga%7C1%7Ca%3A%22maven-processor-plugin%22"><img src="https://img.shields.io/maven-central/v/org.bsc.maven/maven-processor-plugin.svg">
 </a>&nbsp;<img src="https://img.shields.io/github/forks/bsorrentino/maven-annotation-plugin.svg">&nbsp;
 <img src="https://img.shields.io/github/stars/bsorrentino/maven-annotation-plugin.svg">&nbsp;<a href="https://github.com/bsorrentino/maven-annotation-plugin/issues"><img src="https://img.shields.io/github/issues/bsorrentino/maven-annotation-plugin.svg">
-</a>&nbsp;
+</a>&nbsp;[![Join the chat at https://gitter.im/bsorrentino/maven-annotation-plugin](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/bsorrentino/maven-annotation-plugin?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
 
 This plugin helps to use from maven the new annotation processing integrated in java compiler provided from JDK6
 
diff --git a/pom.xml b/pom.xml
index 50d2ed4..1bb5c2c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -130,7 +130,26 @@ This plugin could be considered the 'alter ego' of maven apt plugin http://mojo.
       </pluginManagement>
 
       <plugins>
-
+          <plugin>
+              <groupId>org.apache.maven.plugins</groupId>
+              <artifactId>maven-enforcer-plugin</artifactId>
+              <version>3.0.0-M3</version>
+              <executions>
+                  <execution>
+                      <id>enforce-maven</id>
+                      <goals>
+                          <goal>enforce</goal>
+                      </goals>
+                      <configuration>
+                          <rules>
+                              <requireMavenVersion>
+                                  <version>3.5.2</version>
+                              </requireMavenVersion>
+                          </rules>
+                      </configuration>
+                  </execution>
+              </executions>
+          </plugin>
           <!--
           mvn git-changelog-maven-plugin:git-changelog -N -DtoRef=refs/heads/release/...
           -->