diff --git a/README.md b/README.md
index 44f4d3c30..8e4180715 100644
--- a/README.md
+++ b/README.md
@@ -6,4 +6,6 @@ https://www.alphaxpr.com/
 
 [User Documentation](https://github.com/rusefi/rusefi/wiki/AlphaX-4chan)
 
+[Internal Documentation](https://docs.google.com/spreadsheets/d/1eW7kSP680lBT2MWl0ovFSy7t3at6WnlU7vX5ZDYfQZM)
+
 Designed using [KiCAD](https://www.kicad.org/). Powered by [Hellen One](https://github.com/andreika-git/hellen-one) and [rusEFI](https://github.com/rusefi/rusefi)