diff --git a/README.md b/README.md
index 04b2f64..e2cf462 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,13 @@
 # Ultimate ECP5 Board
 
+## Fork Sand Fork
+
+This is a fork/clone by Fork Sand, Inc. of upstream repo:
+
+https://github.com/daveshah1/TrellisBoard
+
+## Upstream README
+
 WIP - Rev 1.0 prototypes currently under test...
 
 ![Photo of PCB rev 1.0](hardware/ecp5_mainboard/photo/rev10_top.jpg)