diff --git a/pom.xml b/pom.xml
index 1ec9526..8d53d3e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.elasticsearch</groupId>
     <artifactId>elasticsearch-analysis-vietnamese</artifactId>
-    <version>2.3.0</version>
+    <version>2.3.1</version>
     <packaging>jar</packaging>
     <name>elasticsearch-analysis-vietnamese</name>
     <url>https://github.com/duydo/elasticsearch-analysis-vietnamese/</url>
@@ -24,7 +24,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.build.java.version>1.7</project.build.java.version>
-        <elasticsearch.version>2.3.0</elasticsearch.version>
+        <elasticsearch.version>2.3.1</elasticsearch.version>
         <lucene.version>5.5.0</lucene.version>
         <tests.jvms>1</tests.jvms>
         <tests.shuffle>true</tests.shuffle>