Updated version.
diff --git a/README.md b/README.md
index 1583893..bfaf549 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,7 @@
 <plugin>
   <groupId>org.apache.maven.plugins</groupId>
   <artifactId>maven-enforcer-plugin</artifactId>
-  <version>3.0.0-M1</version>
+  <version>3.0.0-M2</version>
 </plugin>
 ```