diff --git a/README b/README
index 4ddac1bdb6b3bc2607ab27296bd7a72f2bbe14ea..510d6533e190d1659215e2ea65fd0a003c8a542d 100644
--- a/README
+++ b/README
@@ -24,6 +24,7 @@ Other tools (alpha and beta quality):
 * bearing.scad: standard/custom bearings
 * screw.cad: screws and augers
 * materials.scad: color definitions for different materials
+* stepper.scad: NEMA standard stepper outlines
 
 Utils:
 * math.scad: general math functions