diff --git a/README.md b/README.md
index 84ce08c44..df2d991f4 100644
--- a/README.md
+++ b/README.md
@@ -153,7 +153,7 @@ C# / .NET Framework | [LibUI.Binding](https://github.com/NattyNarwhal/LibUI.Bind
 C# / .NET Core | [DevZH.UI](https://github.com/noliar/DevZH.UI), [SharpUI](https://github.com/benpye/sharpui/), [TCD.UI](https://github.com/tacdevel/tcdfx)
 CHICKEN Scheme | [wasamasa/libui](https://github.com/wasamasa/libui)
 Common Lisp | [jinwoo/cl-ui](https://github.com/jinwoo/cl-ui)
-Crystal | [libui.cr](https://github.com/Fusion/libui.cr), [hedron](https://github.com/Qwerp-Derp/hedron)
+Crystal | [libui.cr](https://github.com/Fusion/libui.cr), [hedron](https://github.com/Qwerp-Derp/hedron), [iu](https://github.com/grkek/iu)
 D | [DerelictLibui (flat API)](https://github.com/Extrawurst/DerelictLibui), [libuid (object-oriented)](https://github.com/mogud/libuid)
 Euphoria | [libui-euphoria](https://github.com/ghaberek/libui-euphoria)
 Harbour | [hbui](https://github.com/rjopek/hbui)