diff --git a/package.json b/package.json
index ee04dfc..9c0a0b5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "bitget-api",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "description": "Node.js & JavaScript SDK for Bitget REST APIs & WebSockets, with TypeScript & end-to-end tests.",
   "main": "lib/index.js",
   "types": "lib/index.d.ts",
diff --git a/src/types/request/v2/spot.ts b/src/types/request/v2/spot.ts
index 6fdeaaa..74a8cae 100644
--- a/src/types/request/v2/spot.ts
+++ b/src/types/request/v2/spot.ts
@@ -1,8 +1,26 @@
-import { SpotKlineInterval } from '../v1/spotV1';
+type SpotKlineIntervalV2 =
+  | '1min'
+  | '5min'
+  | '15min'
+  | '30min'
+  | '1h'
+  | '4h'
+  | '6h'
+  | '12h'
+  | '1day'
+  | '3day'
+  | '1week'
+  | '1M'
+  | '6Hutc'
+  | '12Hutc'
+  | '1Dutc'
+  | '3Dutc'
+  | '1Wutc'
+  | '1Mutc';
 
 export interface SpotCandlesRequestV2 {
   symbol: string;
-  granularity: SpotKlineInterval;
+  granularity: SpotKlineIntervalV2;
   startTime?: string;
   endTime?: string;
   limit?: string;