diff --git a/Doc/ChangeLog.txt b/Doc/ChangeLog.txt
index 523f4f13..45e73ca5 100644
--- a/Doc/ChangeLog.txt
+++ b/Doc/ChangeLog.txt
@@ -1,3 +1,10 @@
+Version 3.5.1
+-------------
+- WBW: Fix CPMLDR.SYS & ZPMLDR.SYS for SYSCOPY (reported by Guido Santer)
+- MAP: Enhanced SLR Tools Disk Image with Plus versions
+- WBW: Add missing BCLOAD file to MS BASIC Compiler Disk Image (reported by Marshall Gates)
+- WBW: Doc improvements (per Fraser and Rob Gowin)
+
 Version 3.5
 -----------
 - M?F: Fix for hours display in HBRTC application
@@ -56,6 +63,8 @@ Version 3.5
 - D?M: Added NetBoot support for Duodyne
 - WBW: Add options to TUNE/HBIOS to force detection of MSX and RC AY/YM standard PSG ports
 - MAP: Added /B=OPTIONS for automated drive assignment to ASSIGN.COM
+- WBW: Added TE Editor (Ladislau Szilagyi)
+- WBW: Refrech Cowgol disk image (Ladislau Szilagyi)
 
 Version 3.4
 -----------
diff --git a/Source/CPM3/biosldr.z80 b/Source/CPM3/biosldr.z80
index 9eacd755..53853361 100644
--- a/Source/CPM3/biosldr.z80
+++ b/Source/CPM3/biosldr.z80
@@ -668,15 +668,15 @@ lba	ds	4	; current lba
 stack	equ	$
 stksav	ds	2
 
-csvbufs	equ	256
-alvbufs	equ	512
-dirbufs	equ	512
-dtabufs	equ	512
-
-;csvbuf	ds	256	; length (CSV) = ((DRM+1)/4)
-;alvbuf	ds	512	; length (ALV) = ((DSM+1)/4)
-;dirbuf	ds	512	; sector buffer
-;dtabuf	ds	512	; sector buffer
+	; CPMLDR.SYS must be a multiple of 512 bytes (one sector)
+	; for the RomWBW loader.  Below padding as needed to force
+	; this.
+	ds	80h
+
+csvbufs	equ	256	; length (CSV) = ((DRM+1)/4)
+alvbufs	equ	512     ; length (ALV) = ((DSM+1)/4)
+dirbufs	equ	512     ; sector buffer
+dtabufs	equ	512     ; sector buffer
 
 ; Trying to save space.  The loader must fit underneath
 ; the start of BNKBDOS3 and we have a big BNKBDOS because
diff --git a/Source/ver.inc b/Source/ver.inc
index d25bfada..5c5db930 100644
--- a/Source/ver.inc
+++ b/Source/ver.inc
@@ -1,8 +1,8 @@
 #DEFINE	RMJ	3
 #DEFINE	RMN	5
-#DEFINE	RUP	0
+#DEFINE	RUP	1
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.5.0"
+#DEFINE BIOSVER	"3.5.1-dev.0"
 #define rmj	RMJ
 #define rmn	RMN
 #define rup	RUP
diff --git a/Source/ver.lib b/Source/ver.lib
index 092b02ec..f355c78d 100644
--- a/Source/ver.lib
+++ b/Source/ver.lib
@@ -1,7 +1,7 @@
 rmj	equ	3
 rmn	equ	5
-rup	equ	0
+rup	equ	1
 rtp	equ	0
 biosver	macro
-	db	"3.5.0"
+	db	"3.5.1-dev.0"
 	endm