diff --git a/README.md b/README.md
index 226730c..b8b66e8 100644
--- a/README.md
+++ b/README.md
@@ -11,8 +11,6 @@ Realtime Fast convex generator for Unity.
## Usage
You can assign specific vertex on scene view to include convex calculation.
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-
using a [simplex geom submodule](https://github.com/komietty/unity-simplex-geometry), so update submodule first.
## License