diff --git a/spec/manual/public/index.html b/spec/manual/public/index.html
index 738649709..7f825544b 100644
--- a/spec/manual/public/index.html
+++ b/spec/manual/public/index.html
@@ -3,8 +3,8 @@
 <head>
   <meta charset="UTF-8">
   <title>Browserify</title>
-  <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-polyfill/6.26.0/polyfill.js"
-    integrity="sha512-w+OmM1I6bMDUnX5zLWiRiV+3KkhSxvR3Fv9BNoicC3/BtC0xtU6jw/qIv+jjz2lTlFSUMXkL7OM4OmHR/PHkDg=="
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-polyfill/7.12.1/polyfill.js"
+    integrity="sha512-wixq/u8vbwoVM6yCmTHUNszWudaPpwf8pKxfG1NPUOBXTh1ntBx8sr/dJSbGTlZUqpcoPjaUmU1hlBB3oJlzFQ=="
     crossorigin="anonymous" referrerpolicy="no-referrer"></script>
   <script src="exceljs.js"></script>
   <script>
diff --git a/spec/manual/public/index.min.html b/spec/manual/public/index.min.html
index 86eab500d..a6f6820c4 100644
--- a/spec/manual/public/index.min.html
+++ b/spec/manual/public/index.min.html
@@ -3,8 +3,8 @@
 <head>
   <meta charset="UTF-8">
   <title>Browserify</title>
-  <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-polyfill/6.26.0/polyfill.min.js"
-    integrity="sha512-vDTLyifjBBdmGeJrJMO7w+qbbk+7uyoKsUxkhgxPtn3YShSVspezU0EXf780txBgNXzfKkEt7a3RhLs7NmInJQ=="
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-polyfill/7.12.1/polyfill.min.js"
+    integrity="sha512-uzOpZ74myvXTYZ+mXUsPhDF+/iL/n32GDxdryI2SJronkEyKC8FBFRLiBQ7l7U/PTYebDbgTtbqTa6/vGtU23A=="
     crossorigin="anonymous" referrerpolicy="no-referrer"></script>
   <script src="exceljs.min.js"></script>
   <script>
