diff --git a/README.md b/README.md
index 0a612e8..34796b0 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,7 @@ See http://autocmake.org.
 - [MRChem](https://github.com/MRChemSoft/mrchem)
 - [ReSpect](http://rel-qchem.sav.sk)
 - [Flanders](https://github.com/bast/flanders)
+- [Polygons](https://github.com/bast/polygons)
 - [GIMIC](https://github.com/qmcurrents/gimic)
 
 If you use Autocmake, please link to your project via a pull request.