diff --git a/software/ersp/README.md b/software/ersp/README.md
index 43df10eb..f7144901 100644
--- a/software/ersp/README.md
+++ b/software/ersp/README.md
@@ -1,6 +1,9 @@
 User Guide
 ======================
 
+<mark style="background-color: #FFFF00">**NOTE: THE CONTENTS OF THIS DIRECTORY ARE DEPRECATED AND
+NO LONGER WORK WITH THE CURRENT TOTTAG GENERATION 2 HARDWARE**</mark>
+
 Welcome to Team Pat's Guide!
 
 ## Background Knowledge