diff --git a/README b/README
index 12be20d..06b5803 100644
--- a/README
+++ b/README
@@ -149,6 +149,7 @@
 SyncMOS S29C31004T
 Winbond W29C011
 Winbond W29C020C
+Winbond W29C040P
 Winbond W49F002U
 Winbond W49V002A
 Winbond W49V002FA