diff --git a/README.md b/README.md
index 193e4ccf4b7d084a41b8f5093d6722b1b64de3b9..c11df79700e6873dd1775d55acb469e0a0d919c8 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,8 @@ Versions
 
 IK version | ES version
 -----------|-----------
-master | 2.0.0 -> master
+master | 2.1.0 -> master
+1.5.1 | 2.1.0
 1.5.0 | 2.0.0
 1.4.1 | 1.7.2
 1.4.0 | 1.6.0
diff --git a/pom.xml b/pom.xml
index 10ae09d5dd279d0ee7bea6a3bb557f7e6171fc59..844128c82e90308fdb9b88b52d01a3c7801c6c3d 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>1.5.0</version>
+    <version>1.5.1</version>
     <packaging>jar</packaging>
     <description>IK Analyzer for ElasticSearch</description>
     <inceptionYear>2009</inceptionYear>
 
     <properties>
-        <elasticsearch.version>2.0.0</elasticsearch.version>
+        <elasticsearch.version>2.1.0</elasticsearch.version>
 
         <elasticsearch.assembly.descriptor>${project.basedir}/src/main/assemblies/plugin.xml</elasticsearch.assembly.descriptor>
         <elasticsearch.plugin.classname>org.elasticsearch.plugin.analysis.ik.AnalysisIkPlugin</elasticsearch.plugin.classname>
diff --git a/src/main/java/org/elasticsearch/index/analysis/IkAnalyzerProvider.java b/src/main/java/org/elasticsearch/index/analysis/IkAnalyzerProvider.java
index dc40660bec2640852aee8f4403813d1ff8ab1b74..365871f1e7c1892a7982f47387d3e18f2b19b63b 100644
--- a/src/main/java/org/elasticsearch/index/analysis/IkAnalyzerProvider.java
+++ b/src/main/java/org/elasticsearch/index/analysis/IkAnalyzerProvider.java
@@ -4,7 +4,6 @@ import org.elasticsearch.common.inject.Inject;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.env.Environment;
 import org.elasticsearch.index.Index;
-import org.elasticsearch.index.settings.IndexSettings;
 import org.wltea.analyzer.cfg.Configuration;
 import org.wltea.analyzer.dic.Dictionary;
 import org.wltea.analyzer.lucene.IKAnalyzer;
@@ -14,7 +13,7 @@ public class IkAnalyzerProvider extends AbstractIndexAnalyzerProvider<IKAnalyzer
     private boolean useSmart=false;
 
     @Inject
-    public IkAnalyzerProvider(Index index, @IndexSettings Settings indexSettings,Environment env, String name, Settings settings) {
+    public IkAnalyzerProvider(Index index, Settings indexSettings,Environment env, String name, Settings settings) {
         super(index, indexSettings, name, settings);
         Dictionary.initial(new Configuration(env));
         useSmart = settings.get("use_smart", "false").equals("true");
diff --git a/src/main/java/org/elasticsearch/index/analysis/IkTokenizerFactory.java b/src/main/java/org/elasticsearch/index/analysis/IkTokenizerFactory.java
index 96c157da486e803489caeeb3dbeb765c02ebf05d..62b4ddf1a2919d6ecfd249b76a3f6fa5faae5714 100644
--- a/src/main/java/org/elasticsearch/index/analysis/IkTokenizerFactory.java
+++ b/src/main/java/org/elasticsearch/index/analysis/IkTokenizerFactory.java
@@ -6,7 +6,6 @@ import org.elasticsearch.common.inject.assistedinject.Assisted;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.env.Environment;
 import org.elasticsearch.index.Index;
-import org.elasticsearch.index.settings.IndexSettings;
 import org.wltea.analyzer.cfg.Configuration;
 import org.wltea.analyzer.dic.Dictionary;
 import org.wltea.analyzer.lucene.IKTokenizer;
@@ -16,7 +15,7 @@ public class IkTokenizerFactory extends AbstractTokenizerFactory {
   private boolean useSmart=false;
 
   @Inject
-  public IkTokenizerFactory(Index index, @IndexSettings Settings indexSettings, Environment env, @Assisted String name, @Assisted Settings settings) {
+  public IkTokenizerFactory(Index index, Settings indexSettings, Environment env, @Assisted String name, @Assisted Settings settings) {
 	  super(index, indexSettings, name, settings);
       this.settings=settings;
 	  Dictionary.initial(new Configuration(env));