diff --git a/README.md b/README.md
index 49a2177..de8e7aa 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ Versions
 IK version | ES version
 -----------|-----------
 master | 5.x -> master
-5.0.0-alpha5 | 5.0.0-alpha5
+5.0.0-beta1 | 5.0.0-beta1
 1.9.5 | 2.3.5
 1.9.4 | 2.3.4
 1.9.3 | 2.3.3
@@ -241,7 +241,7 @@ Changes
 
 *5.0.0*
 
-- 移除名为 ik analyzer和tokenizer,请分别使用 ik_smart 和 ik_max_word
+- 移除名为 `ik` 的analyzer和tokenizer,请分别使用 `ik_smart` 和 `ik_max_word`
 
 
 Thanks
diff --git a/pom.xml b/pom.xml
index 9aa9147..88c7b9c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -12,7 +12,7 @@
     <inceptionYear>2011</inceptionYear>
 
     <properties>
-        <elasticsearch.version>5.0.0-alpha5</elasticsearch.version>
+        <elasticsearch.version>5.0.0-beta1</elasticsearch.version>
         <maven.compiler.target>1.8</maven.compiler.target>
         <elasticsearch.assembly.descriptor>${project.basedir}/src/main/assemblies/plugin.xml</elasticsearch.assembly.descriptor>
         <elasticsearch.plugin.name>analysis-ik</elasticsearch.plugin.name>
@@ -72,6 +72,7 @@
             <scope>compile</scope>
         </dependency>
 
+
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>
             <artifactId>httpclient</artifactId>
@@ -79,10 +80,9 @@
         </dependency>
 
         <dependency>
-            <groupId>log4j</groupId>
-            <artifactId>log4j</artifactId>
-            <version>1.2.17</version>
-            <scope>runtime</scope>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-api</artifactId>
+            <version>2.3</version>
         </dependency>
 
         <dependency>
diff --git a/src/main/java/org/wltea/analyzer/cfg/Configuration.java b/src/main/java/org/wltea/analyzer/cfg/Configuration.java
index a58f46a..dadd0f2 100644
--- a/src/main/java/org/wltea/analyzer/cfg/Configuration.java
+++ b/src/main/java/org/wltea/analyzer/cfg/Configuration.java
@@ -5,20 +5,13 @@ package org.wltea.analyzer.cfg;
 
 import org.elasticsearch.common.inject.Inject;
 import org.elasticsearch.common.io.PathUtils;
-import org.elasticsearch.common.logging.ESLogger;
-import org.elasticsearch.common.logging.Loggers;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.env.Environment;
 import org.elasticsearch.plugin.analysis.ik.AnalysisIkPlugin;
 import org.wltea.analyzer.dic.Dictionary;
 
-import java.io.*;
-import java.net.URL;
+import java.io.File;
 import java.nio.file.Path;
-import java.util.ArrayList;
-import java.util.InvalidPropertiesFormatException;
-import java.util.List;
-import java.util.Properties;
 
 public class Configuration {
 
diff --git a/src/main/java/org/wltea/analyzer/dic/Dictionary.java b/src/main/java/org/wltea/analyzer/dic/Dictionary.java
index d36c8d1..daa5b62 100644
--- a/src/main/java/org/wltea/analyzer/dic/Dictionary.java
+++ b/src/main/java/org/wltea/analyzer/dic/Dictionary.java
@@ -45,10 +45,11 @@ import org.apache.http.client.methods.HttpGet;
 import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.impl.client.HttpClients;
 import org.elasticsearch.common.io.PathUtils;
-import org.elasticsearch.common.logging.ESLogger;
-import org.elasticsearch.common.logging.Loggers;
+import org.elasticsearch.common.logging.ESLoggerFactory;
 import org.elasticsearch.plugin.analysis.ik.AnalysisIkPlugin;
 import org.wltea.analyzer.cfg.Configuration;
+import org.apache.logging.log4j.Logger;
+
 
 /**
  * 词典管理类,单子模式
@@ -76,7 +77,8 @@ public class Dictionary {
 	 * 配置对象
 	 */
 	private Configuration configuration;
-	public static ESLogger logger = Loggers.getLogger("ik-analyzer");
+
+	private static final Logger logger = ESLoggerFactory.getLogger(Monitor.class.getName());
 
 	private static ScheduledExecutorService pool = Executors.newScheduledThreadPool(1);
 
diff --git a/src/main/java/org/wltea/analyzer/dic/Monitor.java b/src/main/java/org/wltea/analyzer/dic/Monitor.java
index be18e06..fb5355c 100644
--- a/src/main/java/org/wltea/analyzer/dic/Monitor.java
+++ b/src/main/java/org/wltea/analyzer/dic/Monitor.java
@@ -7,12 +7,12 @@ import org.apache.http.client.methods.CloseableHttpResponse;
 import org.apache.http.client.methods.HttpHead;
 import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.impl.client.HttpClients;
-import org.elasticsearch.common.logging.ESLogger;
-import org.elasticsearch.common.logging.Loggers;
+import org.apache.logging.log4j.Logger;
+import org.elasticsearch.common.logging.ESLoggerFactory;
 
 public class Monitor implements Runnable {
 
-	public static ESLogger logger= Loggers.getLogger("ik-analyzer");
+	private static final Logger logger = ESLoggerFactory.getLogger(Monitor.class.getName());
 
 	private static CloseableHttpClient httpclient = HttpClients.createDefault();
 	/*
@@ -80,11 +80,11 @@ public class Monitor implements Runnable {
 				//没有修改，不做操作
 				//noop
 			}else{
-				Dictionary.logger.info("remote_ext_dict {} return bad code {}" , location , response.getStatusLine().getStatusCode() );
+				logger.info("remote_ext_dict {} return bad code {}" , location , response.getStatusLine().getStatusCode() );
 			}
 
 		} catch (Exception e) {
-			Dictionary.logger.error("remote_ext_dict {} error!",e , location);
+			logger.error("remote_ext_dict {} error!",e , location);
 		}finally{
 			try {
 				if (response != null) {
@@ -96,4 +96,4 @@ public class Monitor implements Runnable {
 		}
 	}
 
-}
\ No newline at end of file
+}
diff --git a/src/main/java/org/wltea/analyzer/help/Sleep.java b/src/main/java/org/wltea/analyzer/help/Sleep.java
index 0954c15..94a2278 100644
--- a/src/main/java/org/wltea/analyzer/help/Sleep.java
+++ b/src/main/java/org/wltea/analyzer/help/Sleep.java
@@ -1,11 +1,11 @@
 package org.wltea.analyzer.help;
 
-import org.elasticsearch.common.logging.ESLogger;
-import org.elasticsearch.common.logging.Loggers;
+import org.apache.logging.log4j.Logger;
+import org.elasticsearch.common.logging.ESLoggerFactory;
 
 public class Sleep {
 
-	public static ESLogger logger= Loggers.getLogger("ik-analyzer");
+	private static final Logger logger = ESLoggerFactory.getLogger(Sleep.class.getName());
 
 	public enum Type{MSEC,SEC,MIN,HOUR};
 	public static void sleep(Type type,int num){
@@ -33,4 +33,4 @@ public class Sleep {
 	}
 
 
-}
\ No newline at end of file
+}