diff --git a/index.html b/index.html
index 6a25f26..9319fcd 100755
--- a/index.html
+++ b/index.html
@@ -323,6 +323,6 @@ function updateGutters(cm) {
 </form>
 
 <script src="index.js"></script>
-
+<script defer data-domain="programmingfonts.org" src="https://plausible.io/js/script.js"></script>
 </body>
 </html>