diff --git a/docs/index.html b/docs/index.html
index b6a03cb..e321e47 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -72,7 +72,7 @@ <h1>Pitchy example</h1>
     <pre><code id="code-display" aria-label="Pitchy usage code"></code></pre>
 
     <script id="code" type="module">
-      import { PitchDetector } from "https://esm.sh/pitchy@3";
+      import { PitchDetector } from "https://esm.sh/pitchy@4";
 
       function updatePitch(analyserNode, detector, input, sampleRate) {
         analyserNode.getFloatTimeDomainData(input);