diff --git a/src/doomdef.h b/src/doomdef.h
index 82fc86ff..99e54c07 100644
--- a/src/doomdef.h
+++ b/src/doomdef.h
@@ -214,7 +214,7 @@ extern FILE *logstream;
 // it's only for detection of the version the player is using so the MS can alert them of an update.
 // Only set it higher, not lower, obviously.
 // Note that we use this to help keep internal testing in check; this is why v2.1.0 is not version "1".
-#define MODVERSION 21
+#define MODVERSION 22
 
 // =========================================================================