diff --git a/src/v3/translation_service_client.ts b/src/v3/translation_service_client.ts
index 6bcda4cd..a630052c 100644
--- a/src/v3/translation_service_client.ts
+++ b/src/v3/translation_service_client.ts
@@ -133,6 +133,12 @@ export class TranslationServiceClient {
     // Save the auth object to the client, for use by other methods.
     this.auth = this._gaxGrpc.auth as gax.GoogleAuth;
 
+    // Set useJWTAccessWithScope on the auth object.
+    this.auth.useJWTAccessWithScope = true;
+
+    // Set defaultServicePath on the auth object.
+    this.auth.defaultServicePath = staticMembers.servicePath;
+
     // Set the default scopes in auth client if needed.
     if (servicePath === staticMembers.servicePath) {
       this.auth.defaultScopes = staticMembers.scopes;
@@ -1666,6 +1672,7 @@ export class TranslationServiceClient {
       return this.translationServiceStub!.then(stub => {
         this._terminated = true;
         stub.close();
+        this.operationsClient.close();
       });
     }
     return Promise.resolve();
diff --git a/src/v3beta1/translation_service_client.ts b/src/v3beta1/translation_service_client.ts
index 065fd104..1831f005 100644
--- a/src/v3beta1/translation_service_client.ts
+++ b/src/v3beta1/translation_service_client.ts
@@ -133,6 +133,12 @@ export class TranslationServiceClient {
     // Save the auth object to the client, for use by other methods.
     this.auth = this._gaxGrpc.auth as gax.GoogleAuth;
 
+    // Set useJWTAccessWithScope on the auth object.
+    this.auth.useJWTAccessWithScope = true;
+
+    // Set defaultServicePath on the auth object.
+    this.auth.defaultServicePath = staticMembers.servicePath;
+
     // Set the default scopes in auth client if needed.
     if (servicePath === staticMembers.servicePath) {
       this.auth.defaultScopes = staticMembers.scopes;
@@ -2085,6 +2091,7 @@ export class TranslationServiceClient {
       return this.translationServiceStub!.then(stub => {
         this._terminated = true;
         stub.close();
+        this.operationsClient.close();
       });
     }
     return Promise.resolve();