diff --git a/Source/Apps/FAT/ReadMe.txt b/Source/Apps/FAT/ReadMe.txt
index 02f84de3..916b2ffd 100644
--- a/Source/Apps/FAT/ReadMe.txt
+++ b/Source/Apps/FAT/ReadMe.txt
@@ -1,7 +1,7 @@
 RomWBW HBIOS CP/M FAT Utility ("FAT.COM")
 
 Author: Wayne Warthen
-Updated: 12-Apr-2021
+Updated: 12-Oct-2023
 
 Application to manipulate and exchange files with a FAT (DOS)
 filesystem.  Runs on any HBIOS hosted CP/M implementation.
@@ -101,4 +101,5 @@ HISTORY:
   11-Oct-2019: v0.9.7 (beta) fix FORMAT to use existing partition table entries
                              add attributes to directory listing
   12-Apr-2021: v0.9.8 (beta) support CP/NET drives
+  12-Oct-2023: v0.9.9 (beta) handle updated HBIOS Disk Device call
 		      
diff --git a/Source/Apps/FAT/fat.com b/Source/Apps/FAT/fat.com
index 688faa99..b1b50ee9 100644
Binary files a/Source/Apps/FAT/fat.com and b/Source/Apps/FAT/fat.com differ
diff --git a/Source/ver.inc b/Source/ver.inc
index 801a7216..f43d5766 100644
--- a/Source/ver.inc
+++ b/Source/ver.inc
@@ -2,7 +2,7 @@
 #DEFINE	RMN	4
 #DEFINE	RUP	0
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.4.0-dev.6"
+#DEFINE BIOSVER	"3.4.0-dev.7"
 #define rmj	RMJ
 #define rmn	RMN
 #define rup	RUP
diff --git a/Source/ver.lib b/Source/ver.lib
index 03c673ed..52e14bb1 100644
--- a/Source/ver.lib
+++ b/Source/ver.lib
@@ -3,5 +3,5 @@ rmn	equ	4
 rup	equ	0
 rtp	equ	0
 biosver	macro
-	db	"3.4.0-dev.6"
+	db	"3.4.0-dev.7"
 	endm