diff --git a/pom.xml b/pom.xml
index cf68649..5aecf3c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,7 +25,7 @@
 
     <groupId>com.factual</groupId>
     <artifactId>haeinsa</artifactId>
-    <version>1.0.5.12-factual</version>
+    <version>1.0.5.13-factual</version>
     <packaging>jar</packaging>
 
     <name>haeinsa</name>
@@ -173,7 +173,7 @@
         <dependency>
             <groupId>org.testng</groupId>
             <artifactId>testng</artifactId>
-            <version>6.1.1</version>
+            <version>6.14.3</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
diff --git a/src/test/java/kr/co/vcnc/haeinsa/HaeinsaTestingCluster.java b/src/test/java/kr/co/vcnc/haeinsa/HaeinsaTestingCluster.java
index 7fd78ae..16941b3 100644
--- a/src/test/java/kr/co/vcnc/haeinsa/HaeinsaTestingCluster.java
+++ b/src/test/java/kr/co/vcnc/haeinsa/HaeinsaTestingCluster.java
@@ -15,22 +15,18 @@
  */
 package kr.co.vcnc.haeinsa;
 
-import java.io.IOException;
-import java.util.Set;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-
 import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.hbase.HBaseConfiguration;
-import org.apache.hadoop.hbase.HBaseTestingUtility;
-import org.apache.hadoop.hbase.HColumnDescriptor;
-import org.apache.hadoop.hbase.HTableDescriptor;
-import org.apache.hadoop.hbase.MiniHBaseCluster;
+import org.apache.hadoop.hbase.*;
 import org.apache.hadoop.hbase.client.HBaseAdmin;
 import org.apache.hadoop.hbase.client.HTableInterface;
 import org.apache.hadoop.hbase.client.HTablePool;
 import org.apache.hadoop.hbase.util.PoolMap.PoolType;
-import org.testng.internal.annotations.Sets;
+
+import java.io.IOException;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 
 public final class HaeinsaTestingCluster {
     public static HaeinsaTestingCluster INSTANCE;
@@ -68,7 +64,7 @@ private HaeinsaTestingCluster() throws Exception {
         haeinsaTablePool = TestingUtility.createHaeinsaTablePool(configuration, threadPool);
         hbaseTablePool = new HTablePool(configuration, 128, PoolType.Reusable);
         transactionManager = new HaeinsaTransactionManager(haeinsaTablePool);
-        createdTableNames = Sets.newHashSet();
+        createdTableNames = new HashSet<>();
     }
 
     public MiniHBaseCluster getCluster() {