diff --git a/README.md b/README.md
index 6b3635d0..5cd493ec 100644
--- a/README.md
+++ b/README.md
@@ -130,6 +130,7 @@ Too many dependencies? Because OpenSCAD doesn't provide namespace management, I
 	- [util/parse_number](https://openhome.cc/eGossip/OpenSCAD/lib2-parse_number.html)
     - util/reverse
 	- util/slice
+	- util/sort
 
 - Matrix
 	- [matrix/m_cumulate](https://openhome.cc/eGossip/OpenSCAD/lib2-m_cumulate.html)