diff --git a/pom.xml b/pom.xml
index 8516ccad96ee65441691cbad8777859b822ff532..fe0920bfde44e9915b141c080a01615cfdc89ce5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -81,17 +81,10 @@
 			<version>2.23.4</version>
 		</dependency>
         <dependency>
-            <groupId>com.jd.blockchain</groupId>
+            <groupId>com.jd.utils</groupId>
             <artifactId>utils-common</artifactId>
-            <version>1.4.0.RELEASE</version>
-            <scope>compile</scope>
+            <version>2.0.0.RELEASE</version>
         </dependency>
-		<dependency>
-			<groupId>com.jd.blockchain</groupId>
-			<artifactId>utils-common</artifactId>
-			<version>1.4.0.RELEASE</version>
-			<scope>compile</scope>
-		</dependency>
 
 	</dependencies>
 
diff --git a/src/main/java/bftsmart/communication/ServerCommunicationSystem.java b/src/main/java/bftsmart/communication/ServerCommunicationSystem.java
index e2cd74b1e3e2dfb14e97544374a7d741ac32e543..f7d456032043a4437d6dce6acb5f036adba96929 100644
--- a/src/main/java/bftsmart/communication/ServerCommunicationSystem.java
+++ b/src/main/java/bftsmart/communication/ServerCommunicationSystem.java
@@ -15,13 +15,12 @@ limitations under the License.
 */
 package bftsmart.communication;
 
-import com.jd.blockchain.utils.concurrent.AsyncFuture;
-
 import bftsmart.communication.client.CommunicationSystemServerSide;
 import bftsmart.communication.client.RequestReceiver;
 import bftsmart.communication.server.ServersCommunicationLayer;
 import bftsmart.consensus.roles.Acceptor;
 import bftsmart.tom.core.TOMLayer;
+import utils.concurrent.AsyncFuture;
 
 /**
  *
diff --git a/src/main/java/bftsmart/communication/ServerCommunicationSystemImpl.java b/src/main/java/bftsmart/communication/ServerCommunicationSystemImpl.java
index 2309594e08b4daf397b7c1385a3066dd617d3d1e..5c9d0a6668816b934dc43a8f1cfacbab32ce8673 100644
--- a/src/main/java/bftsmart/communication/ServerCommunicationSystemImpl.java
+++ b/src/main/java/bftsmart/communication/ServerCommunicationSystemImpl.java
@@ -22,15 +22,11 @@ import java.util.concurrent.TimeUnit;
 
 import org.slf4j.LoggerFactory;
 
-import com.jd.blockchain.utils.concurrent.AsyncFuture;
-import com.jd.blockchain.utils.concurrent.CompletableAsyncFuture;
-
 import bftsmart.communication.client.CommunicationSystemServerSide;
 import bftsmart.communication.client.CommunicationSystemServerSideFactory;
 import bftsmart.communication.client.RequestReceiver;
 import bftsmart.communication.queue.MessageQueue;
 import bftsmart.communication.queue.MessageQueueFactory;
-import bftsmart.communication.queue.MessageQueue.MSG_TYPE;
 import bftsmart.communication.server.ServersCommunicationLayer;
 import bftsmart.communication.server.ServersCommunicationLayerImpl;
 import bftsmart.consensus.roles.Acceptor;
@@ -44,6 +40,8 @@ import bftsmart.tom.leaderchange.LCMessage;
 import bftsmart.tom.leaderchange.LeaderRequestMessage;
 import bftsmart.tom.leaderchange.LeaderResponseMessage;
 import bftsmart.tom.leaderchange.LeaderStatusRequestMessage;
+import utils.concurrent.AsyncFuture;
+import utils.concurrent.CompletableAsyncFuture;
 
 /**
  *
diff --git a/src/main/java/bftsmart/communication/server/ServersCommunicationLayerImpl.java b/src/main/java/bftsmart/communication/server/ServersCommunicationLayerImpl.java
index f74b464a67dc221e8b3a345069753bd558736225..e557f49b4a475a41d4d4554d6745d019c434f0df 100644
--- a/src/main/java/bftsmart/communication/server/ServersCommunicationLayerImpl.java
+++ b/src/main/java/bftsmart/communication/server/ServersCommunicationLayerImpl.java
@@ -39,13 +39,12 @@ import javax.crypto.spec.PBEKeySpec;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.jd.blockchain.utils.io.RuntimeIOException;
-
 import bftsmart.communication.SystemMessage;
 import bftsmart.communication.queue.MessageQueue;
 import bftsmart.communication.queue.MessageQueueFactory;
 import bftsmart.reconfiguration.ServerViewController;
 import bftsmart.tom.ServiceReplica;
+import utils.io.RuntimeIOException;
 
 /**
  *
diff --git a/src/main/java/bftsmart/tom/ServiceProxy.java b/src/main/java/bftsmart/tom/ServiceProxy.java
index b40442bb748c9a990ce983ce52233cbc8533727c..6b794dcf37ec219921207462ca61d07ddd85d11c 100644
--- a/src/main/java/bftsmart/tom/ServiceProxy.java
+++ b/src/main/java/bftsmart/tom/ServiceProxy.java
@@ -15,6 +15,16 @@ limitations under the License.
  */
 package bftsmart.tom;
 
+import java.security.NoSuchAlgorithmException;
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.Random;
+import java.util.concurrent.Semaphore;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.locks.ReentrantLock;
+
+import org.slf4j.LoggerFactory;
+
 import bftsmart.reconfiguration.ReconfigureReply;
 import bftsmart.reconfiguration.util.TOMConfiguration;
 import bftsmart.reconfiguration.views.View;
@@ -23,16 +33,7 @@ import bftsmart.tom.core.messages.TOMMessage;
 import bftsmart.tom.core.messages.TOMMessageType;
 import bftsmart.tom.util.Extractor;
 import bftsmart.tom.util.TOMUtil;
-import com.jd.blockchain.utils.exception.ViewObsoleteException;
-import org.slf4j.LoggerFactory;
-
-import java.security.NoSuchAlgorithmException;
-import java.util.Arrays;
-import java.util.Comparator;
-import java.util.Random;
-import java.util.concurrent.Semaphore;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.locks.ReentrantLock;
+import utils.exception.ViewObsoleteException;
 
 /**
  * This class implements a TOMSender and represents a proxy to be used on the
diff --git a/src/main/java/bftsmart/tom/leaderchange/LCManager.java b/src/main/java/bftsmart/tom/leaderchange/LCManager.java
index 720514af348b357b32e74c603a2feb2a4548d4cd..9987fed13d25d04619281ee3b21f72a970a6ea94 100644
--- a/src/main/java/bftsmart/tom/leaderchange/LCManager.java
+++ b/src/main/java/bftsmart/tom/leaderchange/LCManager.java
@@ -37,8 +37,6 @@ import javax.crypto.SecretKey;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.jd.blockchain.utils.ArrayUtils;
-
 import bftsmart.communication.server.ServerConnection;
 import bftsmart.consensus.TimestampValuePair;
 import bftsmart.consensus.app.SHA256Utils;
@@ -47,6 +45,7 @@ import bftsmart.reconfiguration.ServerViewController;
 import bftsmart.tom.core.TOMLayer;
 import bftsmart.tom.core.messages.TOMMessage;
 import bftsmart.tom.util.TOMUtil;
+import utils.ArrayUtils;
 
 /**
  *