diff --git a/services/web/app/src/Features/ThirdPartyDataStore/TpdsController.js b/services/web/app/src/Features/ThirdPartyDataStore/TpdsController.js
index f386672521..6111189549 100644
--- a/services/web/app/src/Features/ThirdPartyDataStore/TpdsController.js
+++ b/services/web/app/src/Features/ThirdPartyDataStore/TpdsController.js
@@ -38,7 +38,10 @@ async function createProject(req, res) {
 async function mergeUpdate(req, res) {
   metrics.inc('tpds.merge-update')
   const { filePath, userId, projectId, projectName } = parseParams(req)
-  const source = req.headers['x-sl-update-source'] || 'unknown'
+  const source =
+    req.headers['x-sl-update-source'] ||
+    req.headers['x-update-source'] ||
+    'unknown'
 
   let metadata
   try {
@@ -92,7 +95,10 @@ async function mergeUpdate(req, res) {
 async function deleteUpdate(req, res) {
   metrics.inc('tpds.delete-update')
   const { filePath, userId, projectId, projectName } = parseParams(req)
-  const source = req.headers['x-sl-update-source'] || 'unknown'
+  const source =
+    req.headers['x-sl-update-source'] ||
+    req.headers['x-update-source'] ||
+    'unknown'
 
   await TpdsUpdateHandler.promises.deleteUpdate(
     userId,
@@ -141,7 +147,10 @@ async function updateFolder(req, res) {
 async function updateProjectContents(req, res, next) {
   const projectId = req.params.project_id
   const path = `/${req.params[0]}` // UpdateMerger expects leading slash
-  const source = req.headers['x-sl-update-source'] || 'unknown'
+  const source =
+    req.headers['x-sl-update-source'] ||
+    req.headers['x-update-source'] ||
+    'unknown'
 
   try {
     await UpdateMerger.promises.mergeUpdate(null, projectId, path, req, source)
@@ -158,7 +167,10 @@ async function updateProjectContents(req, res, next) {
 async function deleteProjectContents(req, res, next) {
   const projectId = req.params.project_id
   const path = `/${req.params[0]}` // UpdateMerger expects leading slash
-  const source = req.headers['x-sl-update-source'] || 'unknown'
+  const source =
+    req.headers['x-sl-update-source'] ||
+    req.headers['x-update-source'] ||
+    'unknown'
 
   await UpdateMerger.promises.deleteUpdate(null, projectId, path, source)
   res.sendStatus(200)
diff --git a/services/web/test/unit/src/ThirdPartyDataStore/TpdsControllerTests.js b/services/web/test/unit/src/ThirdPartyDataStore/TpdsControllerTests.js
index 076cde6f37..8d970abce7 100644
--- a/services/web/test/unit/src/ThirdPartyDataStore/TpdsControllerTests.js
+++ b/services/web/test/unit/src/ThirdPartyDataStore/TpdsControllerTests.js
@@ -103,6 +103,19 @@ describe('TpdsController', function () {
     beforeEach(function () {
       this.projectName = 'projectName'
       this.path = '/here.txt'
+      this.req = {
+        params: {
+          0: `${this.projectName}${this.path}`,
+          user_id: this.user_id,
+          project_id: '',
+        },
+        headers: {
+          'x-update-source': (this.source = 'dropbox'),
+        },
+      }
+    })
+
+    it('should process the update with the update receiver by name and old header', function (done) {
       this.req = {
         params: {
           0: `${this.projectName}${this.path}`,
@@ -113,6 +126,30 @@ describe('TpdsController', function () {
           'x-sl-update-source': (this.source = 'dropbox'),
         },
       }
+      const res = {
+        json: payload => {
+          expect(payload).to.deep.equal({
+            status: 'applied',
+            projectId: this.metadata.projectId.toString(),
+            entityId: this.metadata.entityId.toString(),
+            folderId: this.metadata.folderId.toString(),
+            entityType: this.metadata.entityType,
+            rev: this.metadata.rev.toString(),
+          })
+          this.TpdsUpdateHandler.promises.newUpdate
+            .calledWith(
+              this.user_id,
+              '', // projectId
+              this.projectName,
+              this.path,
+              this.req,
+              this.source
+            )
+            .should.equal(true)
+          done()
+        },
+      }
+      this.TpdsController.mergeUpdate(this.req, res)
     })
 
     it('should process the update with the update receiver by name', function (done) {
@@ -162,7 +199,7 @@ describe('TpdsController', function () {
           destroy() {},
         },
         headers: {
-          'x-sl-update-source': (this.source = 'dropbox'),
+          'x-update-source': (this.source = 'dropbox'),
         },
       }
       const res = {
@@ -232,7 +269,7 @@ describe('TpdsController', function () {
           destroy() {},
         },
         headers: {
-          'x-sl-update-source': (this.source = 'dropbox'),
+          'x-update-source': (this.source = 'dropbox'),
         },
       }
       const res = {
@@ -260,7 +297,7 @@ describe('TpdsController', function () {
           destroy() {},
         },
         headers: {
-          'x-sl-update-source': (this.source = 'dropbox'),
+          'x-update-source': (this.source = 'dropbox'),
         },
       }
       const res = {
@@ -379,7 +416,7 @@ describe('TpdsController', function () {
           destroy: sinon.stub(),
         },
         headers: {
-          'x-sl-update-source': (this.source = 'github'),
+          'x-update-source': (this.source = 'github'),
         },
       }
       this.res = {
@@ -419,7 +456,7 @@ describe('TpdsController', function () {
           destroy: sinon.stub(),
         },
         headers: {
-          'x-sl-update-source': (this.source = 'github'),
+          'x-update-source': (this.source = 'github'),
         },
       }
       this.res = {