diff --git a/docs/assets/js/src/application.js b/docs/assets/js/src/application.js
index f579b10b2d4c7d9191c196038cba5b774b0adfd1..6d3226d9aa47275f529bb736b276b2fb3b9cedae 100644
--- a/docs/assets/js/src/application.js
+++ b/docs/assets/js/src/application.js
@@ -28,6 +28,9 @@
     $('.tooltip-test').tooltip()
     $('.popover-test').popover()
 
+    // Indeterminate checkbox example
+    $('.bd-example-indeterminate [type="checkbox"]').prop('indeterminate', true)
+
     // Disable empty links in docs examples
     $('.bd-example [href=#]').click(function (e) {
       e.preventDefault()