diff --git a/README.md b/README.md
index 1877c71..47fbccb 100644
--- a/README.md
+++ b/README.md
@@ -92,6 +92,7 @@
 * [The GestureDetector Class](https://docs.flutter.io/flutter/widgets/GestureDetector-class.html)
 * [Slider Class](https://docs.flutter.io/flutter/material/Slider-class.html)
 * [FloatingActionButton Class](https://docs.flutter.io/flutter/material/FloatingActionButton-class.html)
+* [ShapeBorder Class](https://docs.flutter.io/flutter/painting/ShapeBorder-class.html)