diff --git a/README.md b/README.md
index 444964c..0298b41 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@
 <dependency>
 	<groupId>com.github.attemper</groupId>
 	<artifactId>quartz-redis</artifactId>
-	<version>0.9.2</version>
+	<version>0.9.3</version>
 </dependency>
 ```
 
diff --git a/README_zh_CN.md b/README_zh_CN.md
index e6a455b..0cabd15 100644
--- a/README_zh_CN.md
+++ b/README_zh_CN.md
@@ -17,7 +17,7 @@
 <dependency>
 	<groupId>com.github.attemper</groupId>
 	<artifactId>quartz-redis</artifactId>
-	<version>0.9.2</version>
+	<version>0.9.3</version>
 </dependency>
 ```
 
diff --git a/pom.xml b/pom.xml
index 6046eb0..1ebc144 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,12 +13,10 @@
         <maven.compiler.target>1.8</maven.compiler.target>
         <quartz.version>2.3.2.2</quartz.version>
         <luttuce.core.version>5.0.2.RELEASE</luttuce.core.version>
-        <mysql.connector.version>5.1.27</mysql.connector.version>
-        <hikari.version>2.3.13</hikari.version>
-        <jackson.version>2.10.3</jackson.version>
+        <jackson.version>2.10.5.1</jackson.version>
 
         <slf4j.version>1.7.7</slf4j.version>
-        <log4j.version>2.13.1</log4j.version>
+        <log4j.version>2.13.2</log4j.version>
         <junit-dep.version>4.10</junit-dep.version>
 
         <maven.compiler.plugin.version>2.1</maven.compiler.plugin.version>
@@ -67,19 +65,6 @@
             <scope>provided</scope>
         </dependency>
 
-        <dependency>
-            <groupId>mysql</groupId>
-            <artifactId>mysql-connector-java</artifactId>
-            <version>${mysql.connector.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>com.zaxxer</groupId>
-            <artifactId>HikariCP-java6</artifactId>
-            <version>${hikari.version}</version>
-            <scope>test</scope>
-        </dependency>
-
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit-dep</artifactId>
diff --git a/src/test/java/com/github/quartz/impl/redisjobstore/HelloJob.java b/src/test/java/com/github/quartz/impl/redisjobstore/HelloJob.java
index fc79434..256d1f0 100644
--- a/src/test/java/com/github/quartz/impl/redisjobstore/HelloJob.java
+++ b/src/test/java/com/github/quartz/impl/redisjobstore/HelloJob.java
@@ -1,23 +1,19 @@
 package com.github.quartz.impl.redisjobstore;
 
-import com.zaxxer.hikari.HikariDataSource;
 import org.quartz.Job;
 import org.quartz.JobExecutionContext;
 import org.quartz.JobExecutionException;
 
-import java.sql.Connection;
-import java.sql.PreparedStatement;
-import java.sql.SQLException;
 import java.text.SimpleDateFormat;
 import java.util.Date;
-import java.util.UUID;
+import java.util.Random;
 
 /**
  * @author ldang
  */
 public class HelloJob implements Job {
 
-    public static HikariDataSource dataSource = Util.getDataSource();
+    //public static HikariDataSource dataSource = Util.getDataSource();
 
     private static final String INSERT_INSTANCE = "insert into instance(time, name) values (?, ?)";
 
@@ -31,11 +27,17 @@ public class HelloJob implements Job {
 
     @Override
     public void execute(JobExecutionContext context) throws JobExecutionException {
-        Date now = new Date();
         String name = context.getJobDetail().getKey().getName();
-        String time = new SimpleDateFormat(yyyyMMddHHmmss).format(now);
-        String start =  new SimpleDateFormat(yyyyMMddHHmmssSSS).format(now);
-        System.out.println(start + "    " + context.getJobDetail().getKey().getName() + "    开始执行");
+        String start =  new SimpleDateFormat(yyyyMMddHHmmssSSS).format(new Date());
+        System.out.println(start + "    " + name + "    开始执行");
+        try {
+            Thread.sleep((new Random().nextInt(3) + 2) * 1000L);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+        String end = new SimpleDateFormat(yyyyMMddHHmmss).format(new Date());
+        System.out.println(end + "    " + name + "    结束执行");
+        /*
         Connection connection = null;
         try {
             String id = UUID.randomUUID().toString();
@@ -60,7 +62,6 @@ public void execute(JobExecutionContext context) throws JobExecutionException {
             ps3.setString(1, end);
             ps3.setString(2, id);
             ps3.execute();
-            System.out.println(new SimpleDateFormat(yyyyMMddHHmmssSSS).format(new Date()) + "    " + context.getJobDetail().getKey().getName() + "    结束执行");
         } catch (Exception e) {
             e.printStackTrace();
         } finally {
@@ -72,6 +73,6 @@ public void execute(JobExecutionContext context) throws JobExecutionException {
                 }
             }
         }
-
+        */
     }
 }
diff --git a/src/test/java/com/github/quartz/impl/redisjobstore/Util.java b/src/test/java/com/github/quartz/impl/redisjobstore/Util.java
index d03bd43..65ef7e0 100644
--- a/src/test/java/com/github/quartz/impl/redisjobstore/Util.java
+++ b/src/test/java/com/github/quartz/impl/redisjobstore/Util.java
@@ -1,7 +1,5 @@
 package com.github.quartz.impl.redisjobstore;
 
-import com.zaxxer.hikari.HikariDataSource;
-
 import java.util.Properties;
 
 public class Util {
@@ -41,6 +39,7 @@ public static Properties getJdbcProperties() {
         return properties;
     }
 
+    /*
     public static HikariDataSource getDataSource() {
         HikariDataSource dataSource = new HikariDataSource();
         dataSource.setJdbcUrl("jdbc:mysql://localhost:3306/ext?characterEncoding=utf-8");
@@ -50,5 +49,5 @@ public static HikariDataSource getDataSource() {
         dataSource.setMinimumIdle(10);
         dataSource.setMaximumPoolSize(10);
         return dataSource;
-    }
+    }*/
 }