diff --git a/docs/javascripts/pinger.js b/docs/javascripts/pinger.js
deleted file mode 100644
index 974c6f5..0000000
--- a/docs/javascripts/pinger.js
+++ /dev/null
@@ -1,28 +0,0 @@
-(() => {
-    const projectKey = 'pk_FBOt2HGSSqzXP8J1OL95ctgo_rw2wbThwygdOl-fWvE';
-    const storageKey = 'pinger:' + projectKey + ':visitor-id';
-
-    try {
-        if (!window.crypto?.randomUUID || !window.fetch) {
-            return;
-        }
-
-        let visitorId = window.localStorage.getItem(storageKey);
-
-        if (!visitorId) {
-            visitorId = window.crypto.randomUUID();
-            window.localStorage.setItem(storageKey, visitorId);
-        }
-
-        window.fetch('https://ping.kirilov.dev/api/v1/ping', {
-            method: 'POST',
-            headers: {'Content-Type': 'application/json'},
-            body: JSON.stringify({projectKey, visitorId}),
-            keepalive: true,
-        }).catch(() => {
-            // Presence measurement must never interrupt the documentation site.
-        });
-    } catch {
-        // Storage or browser privacy settings must never interrupt the site.
-    }
-})();
diff --git a/docs/overrides/main.html b/docs/overrides/main.html
new file mode 100644
index 0000000..9525f3f
--- /dev/null
+++ b/docs/overrides/main.html
@@ -0,0 +1,10 @@
+{% extends "base.html" %}
+
+{% block scripts %}
+  {{ super() }}
+  <script
+      defer
+      src="https://ping.kirilov.dev/widget/v1.js"
+      data-pinger-project-key="pk_7SQRvrREmwsSF9waF-cnRi_WbgvAzgMjDsARb-EeAFw"
+  ></script>
+{% endblock %}
diff --git a/mkdocs.yml b/mkdocs.yml
index b98c251..805648e 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -7,8 +7,7 @@ theme:
   name: material
   logo: assets/icon128.png
   favicon: assets/icon128.png
-extra_javascript:
-  - javascripts/pinger.js
+  custom_dir: docs/overrides
 plugins:
   - search
   - macros