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 @@
4.0.0
org.elasticsearch
elasticsearch-analysis-ik
- 1.9.0
+ 1.9.1
jar
IK Analyzer for Elasticsearch
2011
- 2.3.0
+ 2.3.1
1.7
${project.basedir}/src/main/assemblies/plugin.xml
analysis-ik