diff --git a/lib/Controller/PublicViewController.php b/lib/Controller/PublicViewController.php
index d40cd9b2e..fed0b5d32 100644
--- a/lib/Controller/PublicViewController.php
+++ b/lib/Controller/PublicViewController.php
@@ -139,6 +139,7 @@ class PublicViewController extends Controller {
 		$this->initialStateService->provideInitialState($this->appName, 'show_week_numbers', ($defaultWeekNumbers === 'yes'));
 		$this->initialStateService->provideInitialState($this->appName, 'skip_popover', ($defaultSkipPopover === 'yes'));
 		$this->initialStateService->provideInitialState($this->appName, 'talk_enabled', false);
+		$this->initialStateService->provideInitialState($this->appName, 'talk_api_version', 'v1');
 		$this->initialStateService->provideInitialState($this->appName, 'timezone', $defaultTimezone);
 		$this->initialStateService->provideInitialState($this->appName, 'slot_duration', $defaultSlotDuration);
 		$this->initialStateService->provideInitialState($this->appName, 'default_reminder', $defaultDefaultReminder);
diff --git a/lib/Controller/ViewController.php b/lib/Controller/ViewController.php
index c7be99155..affb65bb4 100644
--- a/lib/Controller/ViewController.php
+++ b/lib/Controller/ViewController.php
@@ -110,6 +110,7 @@ class ViewController extends Controller {
 		$showTasks = $this->config->getUserValue($this->userId, $this->appName, 'showTasks', $defaultShowTasks) === 'yes';
 
 		$talkEnabled = $this->appManager->isEnabledForUser('spreed');
+		$talkApiVersion = version_compare($this->appManager->getAppVersion('spreed'), '12.0.0', '>=') ? 'v4' : 'v1';
 		$tasksEnabled = $this->appManager->isEnabledForUser('tasks');
 
 		$this->initialStateService->provideInitialState($this->appName, 'app_version', $appVersion);
@@ -120,6 +121,7 @@ class ViewController extends Controller {
 		$this->initialStateService->provideInitialState($this->appName, 'show_week_numbers', $showWeekNumbers);
 		$this->initialStateService->provideInitialState($this->appName, 'skip_popover', $skipPopover);
 		$this->initialStateService->provideInitialState($this->appName, 'talk_enabled', $talkEnabled);
+		$this->initialStateService->provideInitialState($this->appName, 'talk_api_version', $talkApiVersion);
 		$this->initialStateService->provideInitialState($this->appName, 'timezone', $timezone);
 		$this->initialStateService->provideInitialState($this->appName, 'slot_duration', $slotDuration);
 		$this->initialStateService->provideInitialState($this->appName, 'default_reminder', $defaultReminder);
diff --git a/src/services/talkService.js b/src/services/talkService.js
index a35cb9521..4bd2c4de4 100644
--- a/src/services/talkService.js
+++ b/src/services/talkService.js
@@ -23,6 +23,7 @@
 import HTTPClient from '@nextcloud/axios'
 import { translate as t } from '@nextcloud/l10n'
 import { generateUrl, generateOcsUrl } from '@nextcloud/router'
+import { loadState } from '@nextcloud/initial-state'
 
 /**
  * Creates a new public talk room
@@ -31,9 +32,10 @@ import { generateUrl, generateOcsUrl } from '@nextcloud/router'
  * @returns {Promise<String>}
  */
 export async function createTalkRoom(eventTitle = null) {
+	const apiVersion = loadState('calendar', 'talk_api_version')
 	let response
 	try {
-		response = await HTTPClient.post(generateOcsUrl('apps/spreed/api/v1/', 2) + 'room', {
+		response = await HTTPClient.post(generateOcsUrl('apps/spreed/api/' + apiVersion + '/', 2) + 'room', {
 			roomType: 3,
 			roomName: eventTitle || t('calendar', 'Chat room for event'),
 		})
diff --git a/tests/php/unit/Controller/PublicViewControllerTest.php b/tests/php/unit/Controller/PublicViewControllerTest.php
index 17dd2b502..4245a331c 100644
--- a/tests/php/unit/Controller/PublicViewControllerTest.php
+++ b/tests/php/unit/Controller/PublicViewControllerTest.php
@@ -101,7 +101,7 @@ class PublicViewControllerTest extends TestCase {
 			->with('imagePath456')
 			->willReturn('absoluteImagePath456');
 
-		$this->initialStateService->expects(self::exactly(13))
+		$this->initialStateService
 			->method('provideInitialState')
 			->withConsecutive(
 				['calendar', 'app_version', '1.0.0'],
@@ -112,6 +112,7 @@ class PublicViewControllerTest extends TestCase {
 				['calendar', 'show_week_numbers', true],
 				['calendar', 'skip_popover', true],
 				['calendar', 'talk_enabled', false],
+				['calendar', 'talk_api_version', 'v1'],
 				['calendar', 'timezone', 'defaultTimezone'],
 				['calendar', 'slot_duration', 'defaultSlotDuration'],
 				['calendar', 'default_reminder', 'defaultDefaultReminder'],
@@ -177,7 +178,7 @@ class PublicViewControllerTest extends TestCase {
 			->with('imagePath456')
 			->willReturn('absoluteImagePath456');
 
-		$this->initialStateService->expects(self::exactly(13))
+		$this->initialStateService
 			->method('provideInitialState')
 			->withConsecutive(
 				['calendar', 'app_version', '1.0.0'],
@@ -188,6 +189,7 @@ class PublicViewControllerTest extends TestCase {
 				['calendar', 'show_week_numbers', true],
 				['calendar', 'skip_popover', true],
 				['calendar', 'talk_enabled', false],
+				['calendar', 'talk_api_version', 'v1'],
 				['calendar', 'timezone', 'defaultTimezone'],
 				['calendar', 'slot_duration', 'defaultSlotDuration'],
 				['calendar', 'default_reminder', 'defaultDefaultReminder'],
diff --git a/tests/php/unit/Controller/ViewControllerTest.php b/tests/php/unit/Controller/ViewControllerTest.php
index 10ea3fcdf..09cdc70fb 100755
--- a/tests/php/unit/Controller/ViewControllerTest.php
+++ b/tests/php/unit/Controller/ViewControllerTest.php
@@ -102,6 +102,11 @@ class ViewControllerTest extends TestCase {
 				['spreed', null, true],
 				['tasks', null, true]
 			]);
+		$this->appManager
+			->method('getAppVersion')
+			->willReturnMap([
+				['spreed', true, '12.0.0'],
+			]);
 
 		$this->initialStateService
 			->method('provideInitialState')
@@ -114,6 +119,7 @@ class ViewControllerTest extends TestCase {
 				['calendar', 'show_week_numbers', true],
 				['calendar', 'skip_popover', true],
 				['calendar', 'talk_enabled', true],
+				['calendar', 'talk_api_version', 'v4'],
 				['calendar', 'timezone', 'Europe/Berlin'],
 				['calendar', 'slot_duration', '00:15:00'],
 				['calendar', 'default_reminder', '00:10:00'],
@@ -167,9 +173,14 @@ class ViewControllerTest extends TestCase {
 		$this->appManager
 			->method('isEnabledForUser')
 			->willReturnMap([
-				['spreed', null, true],
+				['spreed', null, false],
 				['tasks', null, false]
 			]);
+		$this->appManager
+			->method('getAppVersion')
+			->willReturnMap([
+				['spreed', true, '11.3.0'],
+			]);
 
 		$this->initialStateService
 			->method('provideInitialState')
@@ -181,7 +192,8 @@ class ViewControllerTest extends TestCase {
 				['calendar', 'show_weekends', true],
 				['calendar', 'show_week_numbers', true],
 				['calendar', 'skip_popover', true],
-				['calendar', 'talk_enabled', true],
+				['calendar', 'talk_enabled', false],
+				['calendar', 'talk_api_version', 'v1'],
 				['calendar', 'timezone', 'Europe/Berlin'],
 				['calendar', 'slot_duration', '00:15:00'],
 				['calendar', 'default_reminder', '00:10:00'],