diff --git a/plugins/babel-plugin-canyon/package.json b/plugins/babel-plugin-canyon/package.json
index 7ad87f5c..6e94f364 100644
--- a/plugins/babel-plugin-canyon/package.json
+++ b/plugins/babel-plugin-canyon/package.json
@@ -1,6 +1,6 @@
 {
   "name": "babel-plugin-canyon",
-  "version": "1.8.78-beta.19",
+  "version": "1.8.78-beta.20",
   "description": "A Babel plugin cooperates with istanbul to report the coverage",
   "author": "Allen Zhang <wr_zhang25@163.com>",
   "license": "MIT",
diff --git a/plugins/babel-plugin-canyon/templates/inject-in-page-popup.js b/plugins/babel-plugin-canyon/templates/inject-in-page-popup.js
index 7fd6a411..bb191d07 100644
--- a/plugins/babel-plugin-canyon/templates/inject-in-page-popup.js
+++ b/plugins/babel-plugin-canyon/templates/inject-in-page-popup.js
@@ -213,7 +213,7 @@
 
           const uploadPromise = ()=>{
             return fetch(canyon.dsn, {
-              method: 'POST',
+              method: 'post',
               body: JSON.stringify({
                 ...canyon,
                 reportID: document.querySelector('.canyon-form-value-reportid').value,
diff --git a/plugins/inject-popup/index.html b/plugins/inject-popup/index.html
index cfe7d1b7..fe450473 100644
--- a/plugins/inject-popup/index.html
+++ b/plugins/inject-popup/index.html
@@ -197,7 +197,7 @@
     document.querySelector('.result').innerHTML = 'Uploading...'
 
     fetch(canyon.dsn, {
-      method: 'POST',
+      method: 'post',
       body: JSON.stringify({
         ...canyon,
         coverage: window.__coverage__