diff --git a/CHANGELOG.md b/CHANGELOG.md
index 72b4736522..b2f59f7f0e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,10 @@
-## 1.56.5 (Unreleased)
+## 1.56.6 (Unreleased)
+## 1.56.5 (April 26, 2021)
+
+BUG FIXES:
+
+* Resource: `tencentcloud_kubernetes_cluster` upgrade cluster timeout from 3 to 9 minutes.
+
 ## 1.56.4 (April 26, 2021)
 
 BUG FIXES:
diff --git a/tencentcloud/resource_tc_kubernetes_cluster.go b/tencentcloud/resource_tc_kubernetes_cluster.go
index b09ba359d8..75a99fe104 100644
--- a/tencentcloud/resource_tc_kubernetes_cluster.go
+++ b/tencentcloud/resource_tc_kubernetes_cluster.go
@@ -2199,7 +2199,7 @@ func resourceTencentCloudTkeClusterUpdate(d *schema.ResourceData, meta interface
 			return err
 		}
 		//check status
-		err = resource.Retry(readRetryTimeout, func() *resource.RetryError {
+		err = resource.Retry(3*readRetryTimeout, func() *resource.RetryError {
 			ins, has, inErr := tkeService.DescribeCluster(ctx, id)
 			if inErr != nil {
 				return retryError(inErr)