diff --git a/package.json b/package.json
index 05508e2..995bf8f 100644
--- a/package.json
+++ b/package.json
@@ -15,8 +15,8 @@
     "url": "https://github.com/TTvcloud/vcloud-sdk-nodejs"
   },
   "dependencies": {
+    "@byted/aws-signers-v4": "^0.0.8",
     "ajv": "^6.5.4",
-    "aws-sdk": "^2.297.0",
     "debug": "^4.1.1",
     "deepmerge": "^2.1.1",
     "node-fetch": "2.6.0",
diff --git a/src/core/dispatch-request.ts b/src/core/dispatch-request.ts
index beeb6e1..f0061d7 100644
--- a/src/core/dispatch-request.ts
+++ b/src/core/dispatch-request.ts
@@ -7,7 +7,6 @@ const debug = _debug('openapi-request');
 function dispatchRequest(options: FetchOptions) {
   return () => {
     const { method, url, headers, body, logId = '', timeout } = options;
-
     const reqOptions: RequestInit = {
       body: method === 'GET' || method === 'HEAD' ? undefined : body,
       method,
diff --git a/src/core/index.ts b/src/core/index.ts
index 70940fb..08bf96e 100644
--- a/src/core/index.ts
+++ b/src/core/index.ts
@@ -135,21 +135,19 @@ class Client {
 
     const fetchOptions: FetchOptions = {
       timeout: this._configs.timeout!,
-      pathname: () => '/',
+      pathname: '/',
       path: '/',
       ...options,
       region: this._configs.region || REGION.CnNorth1,
       method: method,
-      search: () => `${AWS.queryParamsToString(query)}`,
-      query: util.formatQuery(query),
+      query,
       url,
       body,
     };
-
+    fetchOptions.params = fetchOptions.query;
     debug('fetchOptions: %o', fetchOptions);
-
     const signer = new AWS.AWSSignersV4(fetchOptions, service, {});
-
+    fetchOptions.query = util.formatQuery(query);
     debug('this._configs', this._configs);
     signer.addAuthorization(
       {
diff --git a/src/models/service.ts b/src/models/service.ts
index 13f7de2..3c74ca0 100644
--- a/src/models/service.ts
+++ b/src/models/service.ts
@@ -63,12 +63,15 @@ export interface Statement {
 }
 
 export type FetchOptions = RequestOptions & {
-  pathname: () => string;
-  search: () => string;
+  pathname: string | (() => string);
+  search?: () => string;
   path: string;
   region: string;
   url: string;
   timeout: number;
+  params?: {
+    [key: string]: any;
+  };
 };
 
 export interface ExtendRequestInit extends RequestInit {
diff --git a/src/tools/v4.ts b/src/tools/v4.ts
index 21d4e6b..449e2ca 100644
--- a/src/tools/v4.ts
+++ b/src/tools/v4.ts
@@ -1,4 +1,5 @@
-import AWS from 'aws-sdk/global';
+// import AWS from 'aws-sdk/global';
+import AWSSignersV4 from '@byted/aws-signers-v4';
 
 const uriEscape = (str: string) => {
   try {
@@ -39,6 +40,6 @@ const queryParamsToString = (params: { [key: string]: any }) =>
     .filter(v => v)
     .join('&');
 
-const AWSSignersV4 = (AWS as any).Signers.V4;
+// const AWSSignersV4 = (AWS as any).Signers.V4;
 
 export { queryParamsToString, AWSSignersV4 };