diff --git a/site/content/docs/4.5/components/input-group.md b/site/content/docs/4.5/components/input-group.md
index e97d3362893b..62164e13b7fe 100644
--- a/site/content/docs/4.5/components/input-group.md
+++ b/site/content/docs/4.5/components/input-group.md
@@ -315,6 +315,10 @@ Input groups include support for custom selects and custom file inputs. Browser
 
 ### Custom file input
 
+{{< callout info >}}
+This example uses the [custom file browser]({{< docsref "components/forms/#file-browser" >}}) component, which relies on the separate [bs-custom-file-input](https://www.npmjs.com/package/bs-custom-file-input) plugin.
+{{< /callout >}}
+
 {{< example >}}
 <div class="input-group mb-3">
   <div class="input-group-prepend">