diff --git a/pom.xml b/pom.xml
index 9a83813..d1e3896 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,14 +4,14 @@
 
 	<groupId>com.bellszhu.elasticsearch</groupId>
 	<artifactId>elasticsearch-analysis-dynamic-synonym</artifactId>
-	<version>5.2.0</version>
+	<version>5.5.1</version>
 	<packaging>jar</packaging>
 	<name>elasticsearch-dynamic-synonym</name>
 	<description>Analysis-plugin for synonym</description>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<elasticsearch.version>5.2.0</elasticsearch.version>
+		<elasticsearch.version>5.5.1</elasticsearch.version>
 		<maven.compiler.target>1.8</maven.compiler.target>
 		<elasticsearch.plugin.name>analysis-dynamic-synonym</elasticsearch.plugin.name>
 		<elasticsearch.assembly.descriptor>${project.basedir}/src/main/assemblies/plugin.xml</elasticsearch.assembly.descriptor>
diff --git a/src/main/java/com/bellszhu/elasticsearch/plugin/DynamicSynonymPlugin.java b/src/main/java/com/bellszhu/elasticsearch/plugin/DynamicSynonymPlugin.java
index cecd7de..088ca49 100644
--- a/src/main/java/com/bellszhu/elasticsearch/plugin/DynamicSynonymPlugin.java
+++ b/src/main/java/com/bellszhu/elasticsearch/plugin/DynamicSynonymPlugin.java
@@ -19,7 +19,6 @@
 
 import com.bellszhu.elasticsearch.plugin.synonym.analysis.DynamicSynonymTokenFilterFactory;
 import org.elasticsearch.script.ScriptService;
-import org.elasticsearch.search.SearchRequestParsers;
 import org.elasticsearch.threadpool.ThreadPool;
 import org.elasticsearch.watcher.ResourceWatcherService;
 
@@ -35,7 +34,7 @@
  * @author bellszhu
  *
  */
-public class DynamicSynonymPlugin extends Plugin  implements AnalysisPlugin {
+public class DynamicSynonymPlugin extends Plugin implements AnalysisPlugin {
     private PluginComponent pluginComponent = new PluginComponent();
 
     @Override
@@ -45,7 +44,6 @@ public Collection<Object> createComponents(
             ThreadPool threadPool,
             ResourceWatcherService resourceWatcherService,
             ScriptService scriptService,
-            SearchRequestParsers searchRequestParsers, 
             NamedXContentRegistry xContentRegistry
     ) {
         Collection<Object> components = new ArrayList<>();