diff --git a/Source/ver.inc b/Source/ver.inc
index 272f6272..a7247d12 100644
--- a/Source/ver.inc
+++ b/Source/ver.inc
@@ -2,4 +2,4 @@
 #DEFINE	RMN	1
 #DEFINE	RUP	1
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.1.1-pre.30"
+#DEFINE BIOSVER	"3.1.1-pre.31"
diff --git a/Source/ver.lib b/Source/ver.lib
index 7129a62f..160177cf 100644
--- a/Source/ver.lib
+++ b/Source/ver.lib
@@ -3,5 +3,5 @@ rmn	equ	1
 rup	equ	1
 rtp	equ	0
 biosver	macro
-	db	"3.1.1-pre.30"
+	db	"3.1.1-pre.31"
 	endm