diff --git a/README.md b/README.md
index c03f37b..2fa6ad1 100644
--- a/README.md
+++ b/README.md
@@ -5,3 +5,13 @@ This is a prototype of voxel world made with Godot Engine.
 Just experimenting how to reproduce and optimize a generated terrain like Minecraft does, nothing serious planned.
 
 ![Screenshot](screenshots/2016_04_27_2037_half.png)
+
+Dependencies
+---------------
+
+This project uses two C++ modules:
+- [OpenSimplex](https://github.com/Zylann/godot_opensimplex)
+- [Voxel](https://github.com/Zylann/godot_voxel)
+
+For the old (unmaintained) pure-GDScript version, checkout the branch `full_gdscript`.
+