diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2e0bfee..bcef437 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## [1.0.3](https://github.com/serverless-tencent/tencent-cloud-sdk/compare/v1.0.2...v1.0.3) (2020-08-13)
+
+
+### Bug Fixes
+
+* fixed yun api exceeds qps error ([494f564](https://github.com/serverless-tencent/tencent-cloud-sdk/commit/494f564b3fbe64f26d4f58332092ded1bf1d2eec))
+
 ## [1.0.2](https://github.com/serverless-tencent/tencent-cloud-sdk/compare/v1.0.1...v1.0.2) (2020-08-10)
 
 
diff --git a/package.json b/package.json
index aa5d967..3e07e33 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "tencent-cloud-sdk",
   "description": "Tencent Cloud SDK For Serverless Framework",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "main": "./index.js",
   "publishConfig": {
     "access": "public"
@@ -66,6 +66,7 @@
     "performance-now": "2.1.0",
     "qs": "6.5.2",
     "safe-buffer": "5.1.2",
+    "sleep": "^6.3.0",
     "tough-cookie": "2.5.0",
     "tunnel-agent": "0.6.0",
     "uuid": "3.3.2",
diff --git a/src/client.js b/src/client.js
index 02a22fd..1a7cda7 100644
--- a/src/client.js
+++ b/src/client.js
@@ -5,6 +5,7 @@ const request = require('../lib/request/index')
 const crypto = require('crypto')
 const cos = require('../lib/cos/cos')
 const _ = require('lodash')
+const sleep = require('sleep')
 
 const DEFAULTS = {
   signatureMethod: 'HmacSHA1',
@@ -497,7 +498,7 @@ class SlsMonitor {
   }
 
   async getCustomMetrics(region, announceInstance, rangeTime, period) {
-    const apiQPSLimit = 100
+    const apiQPSLimit = 80
     const metricsRule = [
       /^(GET|POST|DEL|DELETE|PUT|OPTIONS|HEAD)_([a-zA-Z0-9]+)_latency$/i,
       /^(GET|POST|DEL|DELETE|PUT|OPTIONS|HEAD)_([a-zA-Z0-9]+)_(\d+)$/i,
@@ -555,7 +556,7 @@ class SlsMonitor {
 
       if (!((i + 1) % apiQPSLimit)) {
         if (i + 1 != apiQPSLimit) {
-          await SlsMonitor.sleep(1000)
+          sleep.sleep(1)
         }
         firstRequestFlag = false
         results = await getMetricsResponse(requestHandlers)
@@ -569,7 +570,7 @@ class SlsMonitor {
       return responses
     }
     if (!firstRequestFlag) {
-      await SlsMonitor.sleep(1000)
+      sleep.sleep(1)
     }
     results = await getMetricsResponse(requestHandlers)
     results = this.cleanEmptyMetric(results, metricAttributeHash)