diff --git a/src/v1/executions_client.ts b/src/v1/executions_client.ts
index b26dc1b..315fc88 100644
--- a/src/v1/executions_client.ts
+++ b/src/v1/executions_client.ts
@@ -132,6 +132,12 @@ export class ExecutionsClient {
     // 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;
diff --git a/src/v1/workflows_client.ts b/src/v1/workflows_client.ts
index 32a8d55..5b57ad4 100644
--- a/src/v1/workflows_client.ts
+++ b/src/v1/workflows_client.ts
@@ -135,6 +135,12 @@ export class WorkflowsClient {
     // 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;
@@ -1242,6 +1248,7 @@ export class WorkflowsClient {
       return this.workflowsStub!.then((stub) => {
         this._terminated = true;
         stub.close();
+        this.operationsClient.close();
       });
     }
     return Promise.resolve();
diff --git a/src/v1beta/executions_client.ts b/src/v1beta/executions_client.ts
index 67dd752..3b420cc 100644
--- a/src/v1beta/executions_client.ts
+++ b/src/v1beta/executions_client.ts
@@ -132,6 +132,12 @@ export class ExecutionsClient {
     // 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;
diff --git a/src/v1beta/workflows_client.ts b/src/v1beta/workflows_client.ts
index 71f3620..59b1c6a 100644
--- a/src/v1beta/workflows_client.ts
+++ b/src/v1beta/workflows_client.ts
@@ -135,6 +135,12 @@ export class WorkflowsClient {
     // 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;
@@ -1248,6 +1254,7 @@ export class WorkflowsClient {
       return this.workflowsStub!.then((stub) => {
         this._terminated = true;
         stub.close();
+        this.operationsClient.close();
       });
     }
     return Promise.resolve();