diff --git a/cypress/e2e/session-recording.cy.ts b/cypress/e2e/session-recording.cy.ts
index 0875c32dd..3c4f57327 100644
--- a/cypress/e2e/session-recording.cy.ts
+++ b/cypress/e2e/session-recording.cy.ts
@@ -249,7 +249,7 @@ describe('Session recording', () => {
                         [/http:\/\/localhost:\d+\/static\/array.js/, 'script'],
                         [
                             /http:\/\/localhost:\d+\/decide\/\?v=3&ip=1&_=\d+&ver=1\.\d\d\d\.\d+&compression=base64/,
-                            'xmlhttprequest',
+                            'fetch',
                         ],
                         [/http:\/\/localhost:\d+\/static\/recorder.js\?v=1\.\d\d\d\.\d+/, 'script'],
                         [/https:\/\/example.com/, 'fetch'],
@@ -304,7 +304,7 @@ describe('Session recording', () => {
                         [/http:\/\/localhost:\d+\/static\/array.js/, 'script'],
                         [
                             /http:\/\/localhost:\d+\/decide\/\?v=3&ip=1&_=\d+&ver=1\.\d\d\d\.\d+&compression=base64/,
-                            'xmlhttprequest',
+                            'fetch',
                         ],
                         [/http:\/\/localhost:\d+\/static\/recorder.js\?v=1\.\d\d\d\.\d+/, 'script'],
                         [/https:\/\/example.com/, 'xmlhttprequest'],
diff --git a/src/__tests__/featureflags.test.ts b/src/__tests__/featureflags.test.ts
index a54ada8fd..4eb07e9dd 100644
--- a/src/__tests__/featureflags.test.ts
+++ b/src/__tests__/featureflags.test.ts
@@ -475,7 +475,7 @@ describe('featureflags', () => {
             expect(instance._send_request).toHaveBeenCalledWith({
                 url: 'https://us.i.posthog.com/api/early_access_features/?token=random fake token',
                 method: 'GET',
-                transport: 'XHR',
+                transport: 'fetch',
                 callback: expect.any(Function),
             })
             expect(instance._send_request).toHaveBeenCalledTimes(1)
@@ -507,7 +507,7 @@ describe('featureflags', () => {
                 url: 'https://us.i.posthog.com/api/early_access_features/?token=random fake token',
                 method: 'GET',
                 callback: expect.any(Function),
-                transport: 'XHR',
+                transport: 'fetch',
             })
             expect(instance._send_request).toHaveBeenCalledTimes(1)
 
diff --git a/src/__tests__/surveys.test.ts b/src/__tests__/surveys.test.ts
index 6a4fa6916..f0e57fec0 100644
--- a/src/__tests__/surveys.test.ts
+++ b/src/__tests__/surveys.test.ts
@@ -236,7 +236,7 @@ describe('surveys', () => {
         expect(instance._send_request).toHaveBeenCalledWith({
             url: 'https://us.i.posthog.com/api/surveys/?token=testtoken',
             method: 'GET',
-            transport: 'XHR',
+            transport: 'fetch',
             callback: expect.any(Function),
         })
         expect(instance._send_request).toHaveBeenCalledTimes(1)
@@ -281,7 +281,7 @@ describe('surveys', () => {
         expect(instance._send_request).toHaveBeenCalledWith({
             url: 'https://us.i.posthog.com/api/surveys/?token=testtoken',
             method: 'GET',
-            transport: 'XHR',
+            transport: 'fetch',
             callback: expect.any(Function),
         })
         expect(instance._send_request).toHaveBeenCalledTimes(1)
diff --git a/src/posthog-core.ts b/src/posthog-core.ts
index 725a98daf..af4f22cbf 100644
--- a/src/posthog-core.ts
+++ b/src/posthog-core.ts
@@ -1717,7 +1717,7 @@ export class PostHog {
      *       // or any way to know the result of the request. PostHog
      *       // capturing via sendBeacon will not support any event-
      *       // batching or retry mechanisms.
-     *       api_transport: 'XHR'
+     *       api_transport: 'fetch'
      *
      *       // super properties cookie expiration (in days)
      *       cookie_expiration: 365
diff --git a/src/posthog-featureflags.ts b/src/posthog-featureflags.ts
index e8d2e9c3e..910a5c48e 100644
--- a/src/posthog-featureflags.ts
+++ b/src/posthog-featureflags.ts
@@ -433,7 +433,7 @@ export class PostHogFeatureFlags {
 
         if (!existing_early_access_features || force_reload) {
             this.instance._send_request({
-                transport: 'XHR',
+                transport: 'fetch',
                 url: this.instance.requestRouter.endpointFor(
                     'api',
                     `/api/early_access_features/?token=${this.instance.config.token}`
diff --git a/src/posthog-surveys.ts b/src/posthog-surveys.ts
index f33fe4f4a..3e3b13ffe 100644
--- a/src/posthog-surveys.ts
+++ b/src/posthog-surveys.ts
@@ -118,7 +118,7 @@ export class PostHogSurveys {
                     `/api/surveys/?token=${this.instance.config.token}`
                 ),
                 method: 'GET',
-                transport: 'XHR',
+                transport: 'fetch',
                 callback: (response) => {
                     if (response.statusCode !== 200 || !response.json) {
                         return callback([])
diff --git a/src/request.ts b/src/request.ts
index ea4ab1343..f9fd9fdaf 100644
--- a/src/request.ts
+++ b/src/request.ts
@@ -250,7 +250,7 @@ export const request = (_options: RequestOptions) => {
         compression: options.compression,
     })
 
-    const transport = options.transport ?? 'XHR'
+    const transport = options.transport ?? 'fetch'
 
     const transportMethod =
         find(AVAILABLE_TRANSPORTS, (t) => t.transport === transport)?.method ?? AVAILABLE_TRANSPORTS[0].method
diff --git a/src/web-experiments.ts b/src/web-experiments.ts
index 74bbc904b..a275b2113 100644
--- a/src/web-experiments.ts
+++ b/src/web-experiments.ts
@@ -151,7 +151,7 @@ export class WebExperiments {
                 `/api/web_experiments/?token=${this.instance.config.token}`
             ),
             method: 'GET',
-            transport: 'XHR',
+            transport: 'fetch',
             callback: (response) => {
                 if (response.statusCode !== 200 || !response.json) {
                     return callback([])