diff --git a/app/definitions/rest/v1/chat.ts b/app/definitions/rest/v1/chat.ts
index 7b9deb43e..81d3ebe57 100644
--- a/app/definitions/rest/v1/chat.ts
+++ b/app/definitions/rest/v1/chat.ts
@@ -47,6 +47,14 @@ export type ChatEndpoints = {
 			total: number;
 		}>;
 	};
+	'chat.syncThreadsList': {
+		GET: (params: { rid: IServerRoom['_id']; updatedSince: string }) => {
+			threads: {
+				update: IMessage[];
+				remove: IMessage[];
+			};
+		};
+	};
 	'chat.delete': {
 		POST: (params: { msgId: string; roomId: string }) => {
 			_id: string;
diff --git a/app/lib/rocketchat/services/restApi.ts b/app/lib/rocketchat/services/restApi.ts
index e8fb6eae0..2e06f0c26 100644
--- a/app/lib/rocketchat/services/restApi.ts
+++ b/app/lib/rocketchat/services/restApi.ts
@@ -668,10 +668,8 @@ export const getThreadsList = ({ rid, count, offset, text }: { rid: string; coun
 	return sdk.get('chat.getThreadsList', params);
 };
 
-export const getSyncThreadsList = ({ rid, updatedSince }: { rid: string; updatedSince: string }): any =>
+export const getSyncThreadsList = ({ rid, updatedSince }: { rid: string; updatedSince: string }) =>
 	// RC 1.0
-	// TODO: missing definitions from server
-	// @ts-ignore
 	sdk.get('chat.syncThreadsList', {
 		rid,
 		updatedSince