diff --git a/docs/src/markdown/extensions/arithmatex.md b/docs/src/markdown/extensions/arithmatex.md
index f99d6a5d3..0408ae388 100644
--- a/docs/src/markdown/extensions/arithmatex.md
+++ b/docs/src/markdown/extensions/arithmatex.md
@@ -123,7 +123,6 @@ of including MathJax is to use the CDN. Latest version at time of writing this i
 
 /// tab | MathJax 3
 ```html
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
 <script src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js"></script>
 ```
 ///
diff --git a/docs/src/mkdocs.yml b/docs/src/mkdocs.yml
index 819e64d7b..88820ca65 100644
--- a/docs/src/mkdocs.yml
+++ b/docs/src/mkdocs.yml
@@ -238,7 +238,6 @@ extra_css:
 extra_javascript:
   - https://unpkg.com/mermaid@10.6.1/dist/mermaid.min.js
   # - https://cdn.jsdelivr.net/npm/katex@0.13.18/dist/katex.min.js
-  - https://polyfill.io/v3/polyfill.min.js?features=es6
   - https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js
   - assets/pymdownx-extras/extra-loader.js
 
diff --git a/mkdocs.yml b/mkdocs.yml
index 3158f26a2..258f0b8a7 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -238,7 +238,6 @@ extra_css:
 extra_javascript:
   - https://unpkg.com/mermaid@10.6.1/dist/mermaid.min.js
   # - https://cdn.jsdelivr.net/npm/katex@0.13.18/dist/katex.min.js
-  - https://polyfill.io/v3/polyfill.min.js?features=es6
   - https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js
   - assets/pymdownx-extras/extra-loader-BVeA8y63.js