diff --git a/simversion.h b/simversion.h
index da49aa75c01..18a191c1428 100644
--- a/simversion.h
+++ b/simversion.h
@@ -29,7 +29,7 @@
 
 #define OTRP_VERSION_MAJOR 37
 #define OTRP_VERSION_MINOR 0
-#define OTRP_VERSION_PATCH 0
+#define OTRP_VERSION_PATCH 1
 // NOTE: increment OTRP_VERSION_MAJOR when the save data structure changes.
 
 #define MAKEOBJ_VERSION "60.5"