diff --git a/ts/src/profiler.ts b/ts/src/profiler.ts
index bd930e3c..c9f0cc34 100644
--- a/ts/src/profiler.ts
+++ b/ts/src/profiler.ts
@@ -213,7 +213,7 @@ function responseToProfileOrError(
  */
 export class Profiler extends ServiceObject {
   private logger: Logger;
-  private profileLabels: {instance?: string};
+  private profileLabels: {instance?: string, language: string};
   private deployment: Deployment;
   private profileTypes: string[];
   private retryer: Retryer;
@@ -250,7 +250,7 @@ export class Profiler extends ServiceObject {
       labels
     };
 
-    this.profileLabels = {};
+    this.profileLabels = {language: 'nodejs'};
     if (this.config.instance) {
       this.profileLabels.instance = this.config.instance;
     }
diff --git a/ts/test/test-profiler.ts b/ts/test/test-profiler.ts
index 4def4157..2a288e2c 100644
--- a/ts/test/test-profiler.ts
+++ b/ts/test/test-profiler.ts
@@ -293,6 +293,28 @@ describe('Profiler', () => {
       uploaded.profileBytes = undefined;
       assert.deepEqual(uploaded, requestProf);
     });
+    it('should specify language is nodejs when uploading profile', async () => {
+      const config = extend(true, {}, testConfig);
+      const requestProf = {
+        name: 'projects/12345678901/test-projectId',
+        duration: '10s',
+        profileType: 'HEAP',
+        labels: {instance: 'test-instance'}
+      };
+      requestStub =
+          sinon.stub(common.ServiceObject.prototype, 'request')
+              .onCall(0)
+              .callsArgWith(1, undefined, undefined, {statusCode: 200});
+
+      const profiler = new Profiler(testConfig);
+      profiler.timeProfiler = instance(mockTimeProfiler);
+      await profiler.profileAndUpload(requestProf);
+      const gotUploadedProfile = requestStub.args[0][0];
+      assert.equal(
+          gotUploadedProfile.body.labels.language, 'nodejs',
+          `uploaded profile ${
+              gotUploadedProfile} does not specify language is nodejs`);
+    });
     it('should send request to upload heap profile.', async () => {
       const requestProf = {
         name: 'projects/12345678901/test-projectId',
@@ -627,12 +649,6 @@ describe('Profiler', () => {
            ' and backoff specified',
        async () => {
          const config = extend(true, {}, testConfig);
-         const requestProfileResponseBody = {
-           name: 'projects/12345678901/test-projectId',
-           profileType: 'WALL',
-           duration: '10s',
-           labels: {version: config.serviceContext.version}
-         };
          requestStub = sinon.stub(common.ServiceObject.prototype, 'request')
                            .onCall(0)
                            .callsArgWith(1, undefined, undefined, {
@@ -650,12 +666,6 @@ describe('Profiler', () => {
        });
     it('should throw error when response undefined', async () => {
       const config = extend(true, {}, testConfig);
-      const requestProfileResponseBody = {
-        name: 'projects/12345678901/test-projectId',
-        profileType: 'WALL',
-        duration: '10s',
-        labels: {version: config.serviceContext.version}
-      };
       requestStub = sinon.stub(common.ServiceObject.prototype, 'request')
                         .onCall(0)
                         .callsArgWith(1, undefined, undefined, {status: 200});
@@ -703,7 +713,6 @@ describe('Profiler', () => {
                  .onCall(1)
                  .callsArgWith(1, undefined, undefined, {statusCode: 200});
 
-
          const profiler = new Profiler(testConfig);
          profiler.timeProfiler = instance(mockTimeProfiler);
          const delayMillis = await profiler.collectProfile();
@@ -714,12 +723,6 @@ describe('Profiler', () => {
            ' indicated',
        async () => {
          const config = extend(true, {}, testConfig);
-         const requestProfileResponseBody = {
-           name: 'projects/12345678901/test-projectId',
-           profileType: 'WALL',
-           duration: '10s',
-           labels: {version: config.serviceContext.version}
-         };
          requestStub =
              sinon.stub(common.ServiceObject.prototype, 'request')
                  .onCall(0)
@@ -732,13 +735,6 @@ describe('Profiler', () => {
        });
     it('should reset backoff after success', async () => {
       const config = extend(true, {}, testConfig);
-      const requestProfileResponseBody = {
-        name: 'projects/12345678901/test-projectId',
-        profileType: 'WALL',
-        duration: '10s',
-        labels: {instance: config.instance}
-      };
-
       const createProfileResponseBody = {
         name: 'projects/12345678901/test-projectId',
         profileType: 'WALL',
@@ -786,12 +782,6 @@ describe('Profiler', () => {
            ' specified',
        async () => {
          const config = extend(true, {}, testConfig);
-         const requestProfileResponseBody = {
-           name: 'projects/12345678901/test-projectId',
-           profileType: 'WALL',
-           duration: '10s',
-           labels: {instance: config.instance}
-         };
          requestStub = sinon.stub(common.ServiceObject.prototype, 'request')
                            .onCall(0)
                            .callsArgWith(1, undefined, undefined, {
@@ -807,12 +797,6 @@ describe('Profiler', () => {
            ' specified',
        async () => {
          const config = extend(true, {}, testConfig);
-         const requestProfileResponseBody = {
-           name: 'projects/12345678901/test-projectId',
-           profileType: 'WALL',
-           duration: '10s',
-           labels: {instance: config.instance}
-         };
          requestStub = sinon.stub(common.ServiceObject.prototype, 'request')
                            .onCall(0)
                            .callsArgWith(1, undefined, undefined, {
@@ -828,12 +812,6 @@ describe('Profiler', () => {
            'then backoff limit',
        async () => {
          const config = extend(true, {}, testConfig);
-         const requestProfileResponseBody = {
-           name: 'projects/12345678901/test-projectId',
-           profileType: 'WALL',
-           duration: '10s',
-           labels: {version: config.serviceContext.version}
-         };
          requestStub =
              sinon.stub(common.ServiceObject.prototype, 'request')
                  .onCall(0)