diff --git a/examples/node/src/rest/api/v2010/account.ts b/examples/node/src/rest/api/v2010/account.ts
index 64c92cdc1..bd64dc28f 100644
--- a/examples/node/src/rest/api/v2010/account.ts
+++ b/examples/node/src/rest/api/v2010/account.ts
@@ -197,11 +197,14 @@ export class AccountContextImpl implements AccountContext {
   remove(
     callback?: (error: Error | null, item?: boolean) => any,
   ): Promise<boolean> {
+    const headers: any = {};
+
     const instance = this;
     let operationVersion = instance._version,
       operationPromise = operationVersion.remove({
         uri: instance._uri,
         method: "delete",
+        headers,
       });
 
     operationPromise = instance._version.setPromiseCallback(
@@ -214,11 +217,15 @@ export class AccountContextImpl implements AccountContext {
   fetch(
     callback?: (error: Error | null, item?: AccountInstance) => any,
   ): Promise<AccountInstance> {
+    const headers: any = {};
+    headers["Accept"] = "application/json";
+
     const instance = this;
     let operationVersion = instance._version,
       operationPromise = operationVersion.fetch({
         uri: instance._uri,
         method: "get",
+        headers,
       });
 
     operationPromise = operationPromise.then(
@@ -254,6 +261,7 @@ export class AccountContextImpl implements AccountContext {
 
     const headers: any = {};
     headers["Content-Type"] = "application/x-www-form-urlencoded";
+    headers["Accept"] = "application/json";
 
     const instance = this;
     let operationVersion = instance._version,
@@ -607,6 +615,7 @@ export function AccountListInstance(version: V2010): AccountListInstance {
 
     const headers: any = {};
     headers["Content-Type"] = "application/x-www-form-urlencoded";
+    headers["Accept"] = "application/json";
     if (params["xTwilioWebhookEnabled"] !== undefined)
       headers["X-Twilio-Webhook-Enabled"] = params["xTwilioWebhookEnabled"];
 
@@ -662,6 +671,7 @@ export function AccountListInstance(version: V2010): AccountListInstance {
     if (params.pageToken !== undefined) data["PageToken"] = params.pageToken;
 
     const headers: any = {};
+    headers["Accept"] = "application/json";
 
     let operationVersion = version,
       operationPromise = operationVersion.page({
diff --git a/examples/node/src/rest/api/v2010/account/call.ts b/examples/node/src/rest/api/v2010/account/call.ts
index 08edabcb0..fc6d59abe 100644
--- a/examples/node/src/rest/api/v2010/account/call.ts
+++ b/examples/node/src/rest/api/v2010/account/call.ts
@@ -106,11 +106,14 @@ export class CallContextImpl implements CallContext {
   remove(
     callback?: (error: Error | null, item?: boolean) => any,
   ): Promise<boolean> {
+    const headers: any = {};
+
     const instance = this;
     let operationVersion = instance._version,
       operationPromise = operationVersion.remove({
         uri: instance._uri,
         method: "delete",
+        headers,
       });
 
     operationPromise = instance._version.setPromiseCallback(
@@ -123,11 +126,15 @@ export class CallContextImpl implements CallContext {
   fetch(
     callback?: (error: Error | null, item?: CallInstance) => any,
   ): Promise<CallInstance> {
+    const headers: any = {};
+    headers["Accept"] = "application/json";
+
     const instance = this;
     let operationVersion = instance._version,
       operationPromise = operationVersion.fetch({
         uri: instance._uri,
         method: "get",
+        headers,
       });
 
     operationPromise = operationPromise.then(
@@ -415,6 +422,7 @@ export function CallListInstance(
 
     const headers: any = {};
     headers["Content-Type"] = "application/x-www-form-urlencoded";
+    headers["Accept"] = "application/json";
 
     let operationVersion = version,
       operationPromise = operationVersion.create({
diff --git a/examples/node/src/rest/api/v2010/account/call/feedbackCallSummary.ts b/examples/node/src/rest/api/v2010/account/call/feedbackCallSummary.ts
index f1edee7dc..0d11b1753 100644
--- a/examples/node/src/rest/api/v2010/account/call/feedbackCallSummary.ts
+++ b/examples/node/src/rest/api/v2010/account/call/feedbackCallSummary.ts
@@ -120,6 +120,7 @@ export class FeedbackCallSummaryContextImpl
 
     const headers: any = {};
     headers["Content-Type"] = "application/x-www-form-urlencoded";
+    headers["Accept"] = "application/json";
 
     const instance = this;
     let operationVersion = instance._version,
diff --git a/examples/node/src/rest/flexApi/v1/call.ts b/examples/node/src/rest/flexApi/v1/call.ts
index 578b2d70c..331ea05c0 100644
--- a/examples/node/src/rest/flexApi/v1/call.ts
+++ b/examples/node/src/rest/flexApi/v1/call.ts
@@ -60,11 +60,15 @@ export class CallContextImpl implements CallContext {
   update(
     callback?: (error: Error | null, item?: CallInstance) => any,
   ): Promise<CallInstance> {
+    const headers: any = {};
+    headers["Accept"] = "application/json";
+
     const instance = this;
     let operationVersion = instance._version,
       operationPromise = operationVersion.update({
         uri: instance._uri,
         method: "post",
+        headers,
       });
 
     operationPromise = operationPromise.then(
diff --git a/examples/node/src/rest/flexApi/v1/credential/aws.ts b/examples/node/src/rest/flexApi/v1/credential/aws.ts
index 343e72270..d74c9c601 100644
--- a/examples/node/src/rest/flexApi/v1/credential/aws.ts
+++ b/examples/node/src/rest/flexApi/v1/credential/aws.ts
@@ -152,11 +152,14 @@ export class AwsContextImpl implements AwsContext {
   remove(
     callback?: (error: Error | null, item?: boolean) => any,
   ): Promise<boolean> {
+    const headers: any = {};
+
     const instance = this;
     let operationVersion = instance._version,
       operationPromise = operationVersion.remove({
         uri: instance._uri,
         method: "delete",
+        headers,
       });
 
     operationPromise = instance._version.setPromiseCallback(
@@ -169,11 +172,15 @@ export class AwsContextImpl implements AwsContext {
   fetch(
     callback?: (error: Error | null, item?: AwsInstance) => any,
   ): Promise<AwsInstance> {
+    const headers: any = {};
+    headers["Accept"] = "application/json";
+
     const instance = this;
     let operationVersion = instance._version,
       operationPromise = operationVersion.fetch({
         uri: instance._uri,
         method: "get",
+        headers,
       });
 
     operationPromise = operationPromise.then(
@@ -210,6 +217,7 @@ export class AwsContextImpl implements AwsContext {
 
     const headers: any = {};
     headers["Content-Type"] = "application/x-www-form-urlencoded";
+    headers["Accept"] = "application/json";
 
     const instance = this;
     let operationVersion = instance._version,
@@ -485,6 +493,7 @@ export function AwsListInstance(version: V1): AwsListInstance {
     if (params.pageToken !== undefined) data["PageToken"] = params.pageToken;
 
     const headers: any = {};
+    headers["Accept"] = "application/json";
 
     let operationVersion = version,
       operationPromise = operationVersion.page({
diff --git a/examples/node/src/rest/flexApi/v1/credential/aws/history.ts b/examples/node/src/rest/flexApi/v1/credential/aws/history.ts
index 5905ba494..ad11e62e2 100644
--- a/examples/node/src/rest/flexApi/v1/credential/aws/history.ts
+++ b/examples/node/src/rest/flexApi/v1/credential/aws/history.ts
@@ -99,6 +99,7 @@ export class HistoryContextImpl implements HistoryContext {
       };
 
     const headers: any = {};
+    headers["Accept"] = "application/json";
 
     const instance = this;
     let operationVersion = instance._version,
diff --git a/examples/node/src/rest/flexApi/v1/credential/newCredentials.ts b/examples/node/src/rest/flexApi/v1/credential/newCredentials.ts
index 0c662fd68..42d342f48 100644
--- a/examples/node/src/rest/flexApi/v1/credential/newCredentials.ts
+++ b/examples/node/src/rest/flexApi/v1/credential/newCredentials.ts
@@ -159,6 +159,7 @@ export function NewCredentialsListInstance(
 
     const headers: any = {};
     headers["Content-Type"] = "application/x-www-form-urlencoded";
+    headers["Accept"] = "application/json";
 
     let operationVersion = version,
       operationPromise = operationVersion.create({
diff --git a/examples/node/src/rest/versionless/deployed_devices/fleet.ts b/examples/node/src/rest/versionless/deployed_devices/fleet.ts
index 637f88887..ad7935933 100644
--- a/examples/node/src/rest/versionless/deployed_devices/fleet.ts
+++ b/examples/node/src/rest/versionless/deployed_devices/fleet.ts
@@ -68,11 +68,15 @@ export class FleetContextImpl implements FleetContext {
   fetch(
     callback?: (error: Error | null, item?: FleetInstance) => any,
   ): Promise<FleetInstance> {
+    const headers: any = {};
+    headers["Accept"] = "application/json";
+
     const instance = this;
     let operationVersion = instance._version,
       operationPromise = operationVersion.fetch({
         uri: instance._uri,
         method: "get",
+        headers,
       });
 
     operationPromise = operationPromise.then(
@@ -242,6 +246,7 @@ export function FleetListInstance(version: DeployedDevices): FleetListInstance {
 
     const headers: any = {};
     headers["Content-Type"] = "application/x-www-form-urlencoded";
+    headers["Accept"] = "application/json";
 
     let operationVersion = version,
       operationPromise = operationVersion.create({
diff --git a/examples/node/src/rest/versionless/understand/assistant.ts b/examples/node/src/rest/versionless/understand/assistant.ts
index 45da858c5..5d875df02 100644
--- a/examples/node/src/rest/versionless/understand/assistant.ts
+++ b/examples/node/src/rest/versionless/understand/assistant.ts
@@ -169,6 +169,7 @@ export function AssistantListInstance(
     if (params.pageToken !== undefined) data["PageToken"] = params.pageToken;
 
     const headers: any = {};
+    headers["Accept"] = "application/json";
 
     let operationVersion = version,
       operationPromise = operationVersion.page({