diff --git a/README.md b/README.md
index 62721ba..4c543af 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,8 @@ Versions
 
 IK version | ES version
 -----------|-----------
-master | 2.3.0 -> master
+master | 2.3.1 -> master
+1.9.1 | 2.3.1
 1.9.0 | 2.3.0
 1.8.1 | 2.2.1
 1.7.0 | 2.1.1
diff --git a/pom.xml b/pom.xml
index 92db7ce..6480d70 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,13 +6,13 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.elasticsearch</groupId>
     <artifactId>elasticsearch-analysis-ik</artifactId>
-    <version>1.9.0</version>
+    <version>1.9.1</version>
     <packaging>jar</packaging>
     <description>IK Analyzer for Elasticsearch</description>
     <inceptionYear>2011</inceptionYear>
 
     <properties>
-        <elasticsearch.version>2.3.0</elasticsearch.version>
+        <elasticsearch.version>2.3.1</elasticsearch.version>
         <maven.compiler.target>1.7</maven.compiler.target>
         <elasticsearch.assembly.descriptor>${project.basedir}/src/main/assemblies/plugin.xml</elasticsearch.assembly.descriptor>
         <elasticsearch.plugin.name>analysis-ik</elasticsearch.plugin.name>