diff --git a/README.txt b/README.txt
index 0c670ac..b74576d 100644
--- a/README.txt
+++ b/README.txt
@@ -17,6 +17,7 @@ https://git.canithesis.org/divorce/dat-thang
 
 BUILD
 x86_64 GNU/Linux
+x86_64 Windows
 see INSTALL
 
 DESCRIPTION