diff --git a/app/definitions/IRoom.ts b/app/definitions/IRoom.ts
index 378e7b798..552d7b5a9 100644
--- a/app/definitions/IRoom.ts
+++ b/app/definitions/IRoom.ts
@@ -4,7 +4,7 @@ import { IMessage } from './IMessage';
 import { IRocketChatRecord } from './IRocketChatRecord';
 import { IServedBy } from './IServedBy';
 import { IVisitor, SubscriptionType } from './ISubscription';
-import { IUser } from './IUser';
+import { IUser, TNotifications } from './IUser';
 
 interface IRequestTranscript {
 	email: string;
@@ -202,3 +202,13 @@ export interface IServerRoom extends IRocketChatRecord {
 	livechatData?: any;
 	tags?: string[];
 }
+
+export interface IRoomNotifications {
+	disableNotifications?: boolean;
+	muteGroupMentions?: boolean;
+	hideUnreadStatus?: boolean;
+	audioNotificationsValue?: string;
+	desktopNotifications?: TNotifications;
+	mobilePushNotifications?: TNotifications;
+	emailNotifications?: TNotifications;
+}
diff --git a/app/definitions/IUser.ts b/app/definitions/IUser.ts
index 6dfbdf5e7..93bce8805 100644
--- a/app/definitions/IUser.ts
+++ b/app/definitions/IUser.ts
@@ -103,7 +103,7 @@ export interface IUserSettings {
 		[key: string]: any;
 	};
 }
-type TNotifications = 'default' | 'all' | 'mentions' | 'nothing';
+export type TNotifications = 'default' | 'all' | 'mentions' | 'nothing';
 
 export interface INotificationPreferences {
 	id: string;
diff --git a/app/definitions/rest/v1/rooms.ts b/app/definitions/rest/v1/rooms.ts
index d4bb971bc..ebcb29cd4 100644
--- a/app/definitions/rest/v1/rooms.ts
+++ b/app/definitions/rest/v1/rooms.ts
@@ -1,5 +1,5 @@
 import type { IMessage } from '../../IMessage';
-import type { IServerRoom } from '../../IRoom';
+import type { IRoomNotifications, IServerRoom } from '../../IRoom';
 import type { IUser } from '../../IUser';
 
 export type RoomsEndpoints = {
@@ -41,4 +41,7 @@ export type RoomsEndpoints = {
 	'rooms.favorite': {
 		POST: (params: { roomId: string; favorite: boolean }) => {};
 	};
+	'rooms.saveNotification': {
+		POST: (params: { roomId: string; notifications: IRoomNotifications }) => {};
+	};
 };
diff --git a/app/lib/rocketchat/services/restApi.ts b/app/lib/rocketchat/services/restApi.ts
index 6bb6e6c1c..8eabe4566 100644
--- a/app/lib/rocketchat/services/restApi.ts
+++ b/app/lib/rocketchat/services/restApi.ts
@@ -1,7 +1,7 @@
 import sdk from './sdk';
 import { TEAM_TYPE } from '../../../definitions/ITeam';
 import roomTypeToApiType, { RoomTypes } from '../methods/roomTypeToApiType';
-import { SubscriptionType, INotificationPreferences } from '../../../definitions';
+import { SubscriptionType, INotificationPreferences, IRoomNotifications } from '../../../definitions';
 import { ISpotlight } from '../../../definitions/ISpotlight';
 
 export const createChannel = ({
@@ -555,10 +555,8 @@ export const saveUserPreferences = (data: Partial<INotificationPreferences>) =>
 	// RC 0.62.0
 	sdk.post('users.setPreferences', { data });
 
-export const saveNotificationSettings = (roomId: string, notifications: any): any =>
+export const saveNotificationSettings = (roomId: string, notifications: IRoomNotifications) =>
 	// RC 0.63.0
-	// TODO: missing definitions from server
-	// @ts-ignore
 	sdk.post('rooms.saveNotification', { roomId, notifications });
 
 export const getSingleMessage = (msgId: string) =>
diff --git a/app/views/NotificationPreferencesView/index.tsx b/app/views/NotificationPreferencesView/index.tsx
index 71edd8d05..bf76d9e38 100644
--- a/app/views/NotificationPreferencesView/index.tsx
+++ b/app/views/NotificationPreferencesView/index.tsx
@@ -18,6 +18,7 @@ import log, { events, logEvent } from '../../utils/log';
 import sharedStyles from '../Styles';
 import { OPTIONS } from './options';
 import { ChatsStackParamList } from '../../stacks/types';
+import { IRoomNotifications } from '../../definitions';
 
 const styles = StyleSheet.create({
 	pickerText: {
@@ -73,7 +74,7 @@ class NotificationPreferencesView extends React.Component<INotificationPreferenc
 		}
 	}
 
-	saveNotificationSettings = async (key: string, value: string | boolean, params: any) => {
+	saveNotificationSettings = async (key: string, value: string | boolean, params: IRoomNotifications) => {
 		// @ts-ignore
 		logEvent(events[`NP_${key.toUpperCase()}`]);
 		const { room } = this.state;