diff --git a/CHANGELOG.md b/CHANGELOG.md
index 734ffce84..35f38c020 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,4 +2,4 @@
 ---
 
 - [feat:fix discovery weight param not set to register request bug](https://github.com/Tencent/spring-cloud-tencent/pull/104)
-
+- [Bugfix: fix causing cpu 100% when set ScheduledThreadPoolExecutor corePoolSize=0](https://github.com/Tencent/spring-cloud-tencent/pull/101)
diff --git a/changes/changes-1.2.0.md b/changes/changes-1.2.0.md
new file mode 100644
index 000000000..a900b8058
--- /dev/null
+++ b/changes/changes-1.2.0.md
@@ -0,0 +1,19 @@
+# Change Log
+---
+
+- [the server address only support one ip](https://github.com/Tencent/spring-cloud-tencent/pull/36)
+- [feature: get service list by given namespace](https://github.com/Tencent/spring-cloud-tencent/pull/38)
+- [feat:Support multi-discovery server.](https://github.com/Tencent/spring-cloud-tencent/pull/42)
+- [fix:fix [Deserialization of Untrusted Data in logback]](https://github.com/Tencent/spring-cloud-tencent/pull/44/files)
+- [feat:support customize registered ip address.](https://github.com/Tencent/spring-cloud-tencent/pull/47)
+- [fix:fix import default log implement error](https://github.com/Tencent/spring-cloud-tencent/pull/53)
+- [send heartbeat if healthcheck url not configured](https://github.com/Tencent/spring-cloud-tencent/pull/54)
+- [feat:optimize project structure and checkstyle](https://github.com/Tencent/spring-cloud-tencent/pull/56)
+- [feat:divide storage and transfer of metadata.](https://github.com/Tencent/spring-cloud-tencent/pull/63)
+- [feat:support polaris config center.](https://github.com/Tencent/spring-cloud-tencent/pull/69)
+- [feat:optimize metadata module.](https://github.com/Tencent/spring-cloud-tencent/pull/70)
+- [feat: optimize pom dependency and demo](https://github.com/Tencent/spring-cloud-tencent/pull/71)
+- [feat:upgrade polaris version to 1.3.0.](https://github.com/Tencent/spring-cloud-tencent/pull/72)
+- [feat:rollback init polaris-context to application phase](https://github.com/Tencent/spring-cloud-tencent/pull/73)
+- [fix:fix junit not working bug.](https://github.com/Tencent/spring-cloud-tencent/pull/96)
+
diff --git a/pom.xml b/pom.xml
index 4173a5292..d2953a408 100644
--- a/pom.xml
+++ b/pom.xml
@@ -77,7 +77,7 @@
 
 	<properties>
 		<!-- Project revision -->
-		<revision>1.2.0-2020.0.5</revision>
+		<revision>1.3.0-2020.0.5-SNAPSHOT</revision>
 
 		<!-- Spring Cloud -->
 		<spring.cloud.version>2020.0.5</spring.cloud.version>
diff --git a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisServiceRegistry.java b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisServiceRegistry.java
index e6f363e2e..4440ed8cc 100644
--- a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisServiceRegistry.java
+++ b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisServiceRegistry.java
@@ -18,8 +18,8 @@
 
 package com.tencent.cloud.polaris.registry;
 
+import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
-import java.util.concurrent.ScheduledThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
 
 import com.tencent.cloud.common.metadata.config.MetadataLocalProperties;
@@ -68,13 +68,11 @@ public class PolarisServiceRegistry implements ServiceRegistry<Registration> {
 		this.polarisDiscoveryProperties = polarisDiscoveryProperties;
 		this.polarisDiscoveryHandler = polarisDiscoveryHandler;
 		this.metadataLocalProperties = metadataLocalProperties;
+
 		if (polarisDiscoveryProperties.isHeartbeatEnabled()) {
-			ScheduledThreadPoolExecutor heartbeatExecutor = new ScheduledThreadPoolExecutor(0,
-					new NamedThreadFactory("spring-cloud-heartbeat"));
-			heartbeatExecutor.setMaximumPoolSize(1);
-			this.heartbeatExecutor = heartbeatExecutor;
-		}
-		else {
+			this.heartbeatExecutor = Executors
+					.newSingleThreadScheduledExecutor(new NamedThreadFactory("spring-cloud-heartbeat"));
+		} else {
 			this.heartbeatExecutor = null;
 		}
 	}
diff --git a/spring-cloud-tencent-dependencies/pom.xml b/spring-cloud-tencent-dependencies/pom.xml
index eef8f3ba9..c760daa85 100644
--- a/spring-cloud-tencent-dependencies/pom.xml
+++ b/spring-cloud-tencent-dependencies/pom.xml
@@ -62,7 +62,7 @@
 	</developers>
 
 	<properties>
-		<revision>1.2.0-2020.0.5</revision>
+		<revision>1.3.0-2020.0.5-SNAPSHOT</revision>
 		<polaris.version>1.3.1</polaris.version>
 		<powermock.version>2.0.0</powermock.version>