diff --git a/ChangeLog b/ChangeLog
index 6534a64..1964bfe 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,31 @@
+2013-03-?? Keith Winstein <mosh-devel@mit.edu>
+
+	* Version 1.2.4 released.
+
+	* New features:
+	        * Support port ranges with -p LOWPORT:HIGHPORT (Luke Mewburn)
+	        * Ctrl-^ Ctrl-Z suspends mosh client (Nikolai Zeldovich)
+	        * mm:ss display of lost-contact times (Kevin Ballard)
+	        * Show infobar with control chars when Ctrl-^ is typed
+	        * Put terminal in altscreen mode (Anders Kaseorg)
+	        * Tell automake/Debian pkg about our checks (Anders Kaseorg)
+
+	* Platform support:
+	        * OS X: Script to build a universal package (Peter Iannucci)
+	        * FreeBSD: Fix build problems (Jimmy Olgeni)
+	        * AIX: port by Anton Lundin
+	        * Solaris with system curses (Anton Lundin)
+	        * Cygwin and others: eliminate use of IO::Pty (Anton Lundin)
+
+	* Bug fixes:
+	        * Fix bug (introduced in 1.2.3) where server stays around
+	          if process quits while client is detached
+	        * Clean up spurious entries from detached sessions warning
+		* Fix freeze when connectivity is one-directional for hours
+	          (reported by Axel Beckert)
+	        * Don't wipe title until a new one is set (sqweek)
+	        * Eliminate memory leaks and cppcheck warnings (Anders Kaseorg)
+
 2012-10-19 Keith Winstein <mosh-devel@mit.edu>
 
 	* Version 1.2.3 released.
diff --git a/configure.ac b/configure.ac
index 68bddef..8220621 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.61])
-AC_INIT([mosh], [1.2.3], [mosh-devel@mit.edu])
+AC_INIT([mosh], [1.2.3.95rc1], [mosh-devel@mit.edu])
 AM_INIT_AUTOMAKE([-Wall -Werror foreign])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 AC_CONFIG_SRCDIR([src/frontend/mosh-client.cc])
diff --git a/debian/changelog b/debian/changelog
index c4068b0..b9ae34f 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,33 @@
+mosh (1.2.3.95rc1-1) unstable; urgency=low
+
+  * Version 1.2.4 release candidate
+
+  * New features:
+    * Support port ranges with -p LOWPORT:HIGHPORT (Luke Mewburn)
+    * Ctrl-^ Ctrl-Z suspends mosh client (Nikolai Zeldovich)
+    * mm:ss display of lost-contact times (Kevin Ballard)
+    * Show infobar with control chars when Ctrl-^ is typed
+    * Put terminal in altscreen mode (Anders Kaseorg)
+    * Tell automake/Debian pkg about our checks (Anders Kaseorg)
+
+  * Platform support:
+    * OS X: Script to build a universal package (Peter Iannucci)
+    * FreeBSD: Fix build problems (Jimmy Olgeni)
+    * AIX: port by Anton Lundin
+    * Solaris with system curses (Anton Lundin)
+    * Cygwin and others: eliminate use of IO::Pty (Anton Lundin)
+
+  * Bug fixes:
+    * Fix bug (introduced in 1.2.3) where server stays around
+      if process quits while client is detached
+    * Clean up spurious entries from detached sessions warning
+    * Fix freeze when connectivity is one-directional for hours
+      (reported by Axel Beckert)
+    * Don't wipe title until a new one is set (sqweek)
+    * Eliminate memory leaks and cppcheck warnings (Anders Kaseorg)
+
+ -- Keith Winstein <keithw@mit.edu>  Sun, 10 Mar 2013 17:46:37 -0400
+
 mosh (1.2.3-1) unstable; urgency=low
 
   * Version 1.2.3 released.
diff --git a/scripts/mosh b/scripts/mosh
index d01c1dc..e75a3b6 100755
--- a/scripts/mosh
+++ b/scripts/mosh
@@ -30,7 +30,7 @@
 #   this exception statement from all source files in the program, then
 #   also delete it here.
 
-my $MOSH_VERSION = '1.2.3';
+my $MOSH_VERSION = '1.2.3.95rc1';
 
 use warnings;
 use strict;