diff --git a/Source/ver.inc b/Source/ver.inc
index 374eed41..3275e3a2 100644
--- a/Source/ver.inc
+++ b/Source/ver.inc
@@ -2,7 +2,7 @@
 #DEFINE	RMN	5
 #DEFINE	RUP	1
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.5.1-rc.3"
+#DEFINE BIOSVER	"3.5.1-rc.4"
 #define rmj	RMJ
 #define rmn	RMN
 #define rup	RUP
diff --git a/Source/ver.lib b/Source/ver.lib
index ec3e2531..9270b062 100644
--- a/Source/ver.lib
+++ b/Source/ver.lib
@@ -3,5 +3,5 @@ rmn	equ	5
 rup	equ	1
 rtp	equ	0
 biosver	macro
-	db	"3.5.1-rc.3"
+	db	"3.5.1-rc.4"
 	endm