diff --git a/README.md b/README.md
index 326068e..41cbb0b 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,8 @@ Versions
 
 IK version | ES version
 -----------|-----------
-master | 2.2.0 -> master
+master | 2.2.1 -> master
+1.8.1 | 2.2.1
 1.8.0 | 2.2.0
 1.7.0 | 2.1.1
 1.6.1 | 2.1.0
diff --git a/pom.xml b/pom.xml
index db746be..e8afd3d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -12,7 +12,7 @@
     <inceptionYear>2011</inceptionYear>
 
     <properties>
-        <elasticsearch.version>2.2.0</elasticsearch.version>
+        <elasticsearch.version>2.2.1</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>elasticsearch-analysis-ik</elasticsearch.plugin.name>