diff --git a/sdk/containerinstance/arm-containerinstance/src/containerInstanceManagementClientContext.ts b/sdk/containerinstance/arm-containerinstance/src/containerInstanceManagementClientContext.ts
index c86399f5c7ea..b8f98f3e42ca 100644
--- a/sdk/containerinstance/arm-containerinstance/src/containerInstanceManagementClientContext.ts
+++ b/sdk/containerinstance/arm-containerinstance/src/containerInstanceManagementClientContext.ts
@@ -44,7 +44,7 @@ export class ContainerInstanceManagementClientContext extends msRestAzure.AzureS
 
     super(credentials, options);
 
-    this.apiVersion = '2020-11-01';
+    this.apiVersion = '2021-03-01';
     this.acceptLanguage = 'en-US';
     this.longRunningOperationRetryTimeout = 30;
     this.baseUri = options.baseUri || this.baseUri || "https://management.azure.com";
diff --git a/sdk/containerinstance/arm-containerinstance/src/operations/containerGroups.ts b/sdk/containerinstance/arm-containerinstance/src/operations/containerGroups.ts
index 7a03a85e7d17..ea5c1289b758 100644
--- a/sdk/containerinstance/arm-containerinstance/src/operations/containerGroups.ts
+++ b/sdk/containerinstance/arm-containerinstance/src/operations/containerGroups.ts
@@ -619,7 +619,7 @@ const beginStartOperationSpec: msRest.OperationSpec = {
     Parameters.acceptLanguage
   ],
   responses: {
-    204: {},
+    202: {},
     default: {
       bodyMapper: Mappers.CloudError
     }