diff --git a/Doc/ChangeLog.txt b/Doc/ChangeLog.txt
index 586a8ace..588ffed8 100644
--- a/Doc/ChangeLog.txt
+++ b/Doc/ChangeLog.txt
@@ -25,6 +25,7 @@ Version 2.9.1
 - S?K: Initial support for Easy Z80
 - PMS: Enhance VDU driver to support alternative screen dimensions
 - WBW: DDT and DDTZ modified to use RST 30 instead of RST 38 to avoid conflicts with IM 1 interrupts
+- WBW: Support LBA style access in floppy driver
 
 Version 2.9.0
 -------------
diff --git a/ReadMe.txt b/ReadMe.txt
index 4f49c114..2da625f5 100644
--- a/ReadMe.txt
+++ b/ReadMe.txt
@@ -7,7 +7,7 @@
 ***********************************************************************
 
 Wayne Warthen (wwarthen@gmail.com)
-Version 2.9.1-pre.12, 2019-03-15
+Version 2.9.1-pre.13, 2019-05-08
 https://www.retrobrewcomputers.org/
 
 RomWBW is a ROM-based implementation of CP/M-80 2.2 and Z-System for 
diff --git a/Source/CBIOS/ver.inc b/Source/CBIOS/ver.inc
index a444ae6e..00c8350d 100644
--- a/Source/CBIOS/ver.inc
+++ b/Source/CBIOS/ver.inc
@@ -2,4 +2,4 @@
 #DEFINE	RMN	9
 #DEFINE	RUP	1
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"2.9.1-pre.12"
+#DEFINE BIOSVER	"2.9.1-pre.13"
diff --git a/Source/HBIOS/ver.inc b/Source/HBIOS/ver.inc
index a444ae6e..00c8350d 100644
--- a/Source/HBIOS/ver.inc
+++ b/Source/HBIOS/ver.inc
@@ -2,4 +2,4 @@
 #DEFINE	RMN	9
 #DEFINE	RUP	1
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"2.9.1-pre.12"
+#DEFINE BIOSVER	"2.9.1-pre.13"