diff --git a/index.html b/index.html
index d469a36..a11ef20 100644
--- a/index.html
+++ b/index.html
@@ -9,12 +9,12 @@
 <link rel="stylesheet" href="styles.css">
 <link rel="stylesheet" href="display.css">
 
-<script src="https://cdn.rawgit.com/inexorabletash/polyfill/v0.1.16/polyfill.min.js"></script>
-<script src="https://cdn.rawgit.com/inexorabletash/polyfill/v0.1.16/keyboard.js"></script>
+<script src="https://cdn.rawgit.com/inexorabletash/polyfill/v0.1.25/polyfill.min.js"></script>
+<script src="https://cdn.rawgit.com/inexorabletash/polyfill/v0.1.25/keyboard.js"></script>
 
 <!-- CodeMirror syntax highlighting - this is optional -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.12.0/codemirror.min.js"></script>
-<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.12.0/codemirror.css">
+<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.17.0/codemirror.min.js"></script>
+<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.17.0/codemirror.css">
 <script src="cm/basic.js"></script>
 <link rel="stylesheet" href="cm/basic.css">
 <style>
diff --git a/reference.html b/reference.html
index 4b9a66a..45736a2 100644
--- a/reference.html
+++ b/reference.html
@@ -603,7 +603,7 @@ function which implements the logic for walking over the array.<p>
 </ol>
 </section>
 
-<script src="https://cdn.rawgit.com/inexorabletash/polyfill/v0.1.16/polyfill.min.js"></script>
+<script src="https://cdn.rawgit.com/inexorabletash/polyfill/v0.1.25/polyfill.min.js"></script>
 <script>
 (function buildTOC(el) {
   var html = [];
diff --git a/script.js b/script.js
index 59d9292..fa4f637 100644
--- a/script.js
+++ b/script.js
@@ -8,8 +8,8 @@
   document.write('<link rel="stylesheet" href="' + baseURL + 'display.css">');
 
   function load(url) { document.write('<script src="' + baseURL + url + '"></script>'); }
-  load('https://cdn.rawgit.com/inexorabletash/polyfill/v0.1.16/polyfill.min.js');
-  load('https://cdn.rawgit.com/inexorabletash/polyfill/v0.1.16/keyboard.js');
+  load('https://cdn.rawgit.com/inexorabletash/polyfill/v0.1.25/polyfill.min.js');
+  load('https://cdn.rawgit.com/inexorabletash/polyfill/v0.1.25/keyboard.js');
   load('tty.js');
   load('lores.js');
   load('hires.js');