diff --git a/_data/origin/basic.yml b/_data/origin/basic.yml
index 9ffc76c..ed99ea8 100644
--- a/_data/origin/basic.yml
+++ b/_data/origin/basic.yml
@@ -42,8 +42,5 @@ lazy-polyfill:
 clipboard:
   js: /assets/lib/clipboard/clipboard.min.js
 
-polyfill:
-  js: /assets/lib/polyfill-v3-es6/polyfill.min.js
-
 mathjax:
   js: /assets/lib/mathjax/tex-chtml.js
diff --git a/_data/origin/cors.yml b/_data/origin/cors.yml
index 7322695..079fa0a 100644
--- a/_data/origin/cors.yml
+++ b/_data/origin/cors.yml
@@ -53,8 +53,5 @@ lazy-polyfill:
 clipboard:
   js: https://cdn.jsdelivr.net/npm/clipboard@2.0.11/dist/clipboard.min.js
 
-polyfill:
-  js: https://polyfill.io/v3/polyfill.min.js?features=es6
-
 mathjax:
   js: https://cdn.jsdelivr.net/npm/mathjax@3.2.2/es5/tex-chtml.js
diff --git a/_includes/js-selector.html b/_includes/js-selector.html
index b332f10..6352c96 100644
--- a/_includes/js-selector.html
+++ b/_includes/js-selector.html
@@ -87,7 +87,7 @@
       }
     };
   </script>
-  <script src="{{ site.data.origin[type].polyfill.js | relative_url }}"></script>
+  <script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
   <script id="MathJax-script" async src="{{ site.data.origin[type].mathjax.js | relative_url }}"></script>
 {% endif %}
 
diff --git a/assets/lib b/assets/lib
index f80ba2f..13e6909 160000
--- a/assets/lib
+++ b/assets/lib
@@ -1 +1 @@
-Subproject commit f80ba2f1616496cba34f3fd3eef1564d8fa843cd
+Subproject commit 13e6909cc40e1b09f33fab420d743dfa709e86bb