diff --git a/types/ioredis/index.d.ts b/types/ioredis/index.d.ts
index de71a9f083..6834121851 100644
--- a/types/ioredis/index.d.ts
+++ b/types/ioredis/index.d.ts
@@ -48,6 +48,7 @@ declare namespace IORedis {
     }
 
     interface Redis extends NodeJS.EventEmitter, Commander {
+        Promise: typeof Promise;
         status: string;
         connect(callback?: () => void): Promise<any>;
         disconnect(): void;
diff --git a/types/ioredis/ioredis-tests.ts b/types/ioredis/ioredis-tests.ts
index d8106ecdea..e8e32062dc 100644
--- a/types/ioredis/ioredis-tests.ts
+++ b/types/ioredis/ioredis-tests.ts
@@ -105,7 +105,10 @@ redis.multi([
     // results = [[null, 'OK'], [null, 'bar']]
 });
 
-const keys = [ 'foo', 'bar' ];
+redis.Promise.onPossiblyUnhandledRejection((error) => {
+});
+
+const keys = ['foo', 'bar'];
 redis.mget(...keys);
 
 new Redis.Cluster([