diff --git a/docs/README.md b/docs/README.md
index 0eaa57c..512abb4 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -27,7 +27,7 @@ Check out this [Wiki page](https://github.com/SamuelTS/SketchUp-Parametric-Model
 Credits
 -------
 
-Parametric Modeling plugin is powered by [Rete.js](https://github.com/retejs/rete) framework. Shapes module of this plugin is based on [SketchUp Shapes plugin code](https://github.com/SketchUp/sketchup-shapes). SolidOperations module of this plugin was coded by [Julia Christina Eneroth](https://github.com/Eneroth3). Toolbar icons of this plugin were made by [Freepik](https://www.freepik.com), [Smashicons](https://www.flaticon.com/authors/smashicons), [xnimrodx](https://www.flaticon.com/authors/xnimrodx) and [Pixel perfect](https://www.flaticon.com/authors/pixel-perfect) from [Flaticon](https://www.flaticon.com/).
+Parametric Modeling plugin is powered by [Rete.js](https://github.com/retejs/rete) framework. This plugin uses [Dentaku](https://github.com/rubysolo/dentaku) library to evaluate formulas. Shapes module of this plugin is based on [SketchUp Shapes plugin code](https://github.com/SketchUp/sketchup-shapes). SolidOperations module of this plugin was coded by [Julia Christina Eneroth](https://github.com/Eneroth3). Toolbar icons of this plugin were made by [Freepik](https://www.freepik.com), [Smashicons](https://www.flaticon.com/authors/smashicons), [xnimrodx](https://www.flaticon.com/authors/xnimrodx) and [Pixel perfect](https://www.flaticon.com/authors/pixel-perfect) from [Flaticon](https://www.flaticon.com/).
 
 Copyright
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