diff --git a/.github/workflows/ci_check.yml b/.github/workflows/ci_check.yml
index 6bfae39..91d0a2a 100644
--- a/.github/workflows/ci_check.yml
+++ b/.github/workflows/ci_check.yml
@@ -7,7 +7,7 @@ on: pull_request
 
 jobs:
   ubuntu1804jdk8:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
       - name: Set up JDK 1.8
@@ -20,7 +20,7 @@ jobs:
         run: bash <(curl -s https://codecov.io/bash)
 
   ubuntu1804jdk11:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
       - name: Set up JDK 11
diff --git a/build.gradle b/build.gradle
index 1798e16..98005ac 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,6 +1,6 @@
 plugins {
     id 'com.github.sherter.google-java-format' version '0.8'
-    id 'com.github.johnrengelman.shadow' version '5.2.0'
+    id 'com.github.johnrengelman.shadow' version '6.1.0'
     id 'org.ajoberstar.grgit' version '4.0.1'
     id 'maven-publish'
 }
@@ -72,7 +72,7 @@ dependencies {
 
     // WeCross
 
-    implementation ('com.webank:wecross-java-stub:1.3.0') {
+    implementation ('com.webank:wecross-java-stub:1.3.2-SNAPSHOT') {
         exclude group: 'org.fisco-bcos', module: 'tcnative'
     }
     configurations.compile.exclude(group: 'ch.qos.logback')
diff --git a/src/main/java/com/webank/wecross/stub/fabric/FabricBlock.java b/src/main/java/com/webank/wecross/stub/fabric/FabricBlock.java
index 9b5117a..762d320 100644
--- a/src/main/java/com/webank/wecross/stub/fabric/FabricBlock.java
+++ b/src/main/java/com/webank/wecross/stub/fabric/FabricBlock.java
@@ -72,6 +72,15 @@ public BlockHeader dumpWeCrossHeader() {
         blockHeader.setHash(this.getHash());
         blockHeader.setPrevHash(header.getPrevHash());
         blockHeader.setTransactionRoot(header.getDataHash());
+        try {
+            Common.Envelope envelope = Common.Envelope.parseFrom(blockData.blockData.getData(0));
+            Common.Payload payload = Common.Payload.parseFrom(envelope.getPayload());
+            Common.ChannelHeader channelHeader =
+                    Common.ChannelHeader.parseFrom(payload.getHeader().getChannelHeader());
+            blockHeader.setTimestamp(channelHeader.getTimestamp().getSeconds());
+        } catch (Exception ignored) {
+            blockHeader.setTimestamp(0);
+        }
         return blockHeader;
     }
 
diff --git a/src/main/java/com/webank/wecross/stub/fabric/FabricDriver.java b/src/main/java/com/webank/wecross/stub/fabric/FabricDriver.java
index c269e36..1971efd 100644
--- a/src/main/java/com/webank/wecross/stub/fabric/FabricDriver.java
+++ b/src/main/java/com/webank/wecross/stub/fabric/FabricDriver.java
@@ -498,7 +498,7 @@ public void asyncGetTransaction(
                                         blockNumber,
                                         blockManager,
                                         hasOnChain -> {
-                                            if (!hasOnChain.booleanValue()) {
+                                            if (!hasOnChain) {
                                                 callback.onResponse(
                                                         new Exception(
                                                                 "Transaction proof verify failed. Tx("
@@ -597,15 +597,17 @@ private void asyncSendTransactionHandleOrdererResponse(
                                                             + txBlockNumber
                                                             + ")");
                                 } else {
+                                    FabricTransaction fabricTransaction =
+                                            FabricTransaction.buildFromPayloadBytes(
+                                                    ordererPayloadToSign);
                                     response =
                                             decodeTransactionResponse(
-                                                    FabricTransaction.buildFromPayloadBytes(
-                                                                    ordererPayloadToSign)
-                                                            .getOutputBytes());
+                                                    fabricTransaction.getOutputBytes());
                                     response.setHash(txID);
                                     response.setBlockNumber(txBlockNumber);
                                     response.setErrorCode(
                                             FabricType.TransactionResponseStatus.SUCCESS);
+                                    response.setTimestamp(fabricTransaction.getTimestamp());
                                     response.setMessage("Success");
                                     transactionException =
                                             TransactionException.Builder.newSuccessException();
@@ -1195,6 +1197,7 @@ private Transaction parseFabricTransaction(FabricTransaction fabricTransaction)
         ByteString payload = ByteString.copyFrom(outputBytes);
         String[] output = new String[] {payload.toStringUtf8()};
         transaction.getTransactionResponse().setResult(output);
+        transaction.getTransactionResponse().setTimestamp(fabricTransaction.getTimestamp());
 
         /** xa */
         transaction.setTransactionByProxy(byProxy);
diff --git a/src/main/java/com/webank/wecross/stub/fabric/FabricTransaction.java b/src/main/java/com/webank/wecross/stub/fabric/FabricTransaction.java
index b150af5..cd6b8f0 100644
--- a/src/main/java/com/webank/wecross/stub/fabric/FabricTransaction.java
+++ b/src/main/java/com/webank/wecross/stub/fabric/FabricTransaction.java
@@ -1,6 +1,7 @@
 package com.webank.wecross.stub.fabric;
 
 import com.google.protobuf.ByteString;
+import com.google.protobuf.Timestamp;
 import java.nio.charset.Charset;
 import java.util.ArrayList;
 import java.util.LinkedList;
@@ -17,14 +18,20 @@ public class FabricTransaction {
     private List<TransactionAction> transactionActionList = new ArrayList<>();
     private String txID;
 
+    private long timestamp = 0;
+
     FabricTransaction(byte[] payloadBytes) throws Exception {
 
         Common.Payload transactionPayload = Common.Payload.parseFrom(payloadBytes);
         this.header = transactionPayload.getHeader();
-        this.txID = Common.ChannelHeader.parseFrom(header.getChannelHeader()).getTxId();
+        Common.ChannelHeader channelHeader =
+                Common.ChannelHeader.parseFrom(header.getChannelHeader());
+        this.txID = channelHeader.getTxId();
         this.transaction =
                 org.hyperledger.fabric.protos.peer.FabricTransaction.Transaction.parseFrom(
                         transactionPayload.getData());
+        Timestamp ts = channelHeader.getTimestamp();
+        this.timestamp = ts.getSeconds();
         for (org.hyperledger.fabric.protos.peer.FabricTransaction.TransactionAction action :
                 transaction.getActionsList()) {
             transactionActionList.add(new TransactionAction(action));
@@ -74,6 +81,10 @@ public byte[] getOutputBytes() {
                 .getOutputBytes();
     }
 
+    public long getTimestamp() {
+        return timestamp;
+    }
+
     public static class TransactionAction {
         private org.hyperledger.fabric.protos.peer.FabricTransaction.TransactionAction
                 transactionAction;