diff --git a/configure.ac b/configure.ac
index 7f6a2c0..b84882d 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], [1.09a], [mosh-devel@mit.edu])
+AC_INIT([mosh], [1.09b], [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 c355fa2..a6b909c 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+mosh (1.09b-1) unstable; urgency=low
+
+  * More efficient repaint when scrolling top part of window
+
+ -- Keith Winstein <keithw@mit.edu>  Sun, 18 Mar 2012 16:37:30 -0400
+
 mosh (1.09a-1) unstable; urgency=low
 
   * Add chaff to datagrams to frustrate statistical analysis of length
diff --git a/scripts/mosh b/scripts/mosh
index cc864e7..bed9394 100755
--- a/scripts/mosh
+++ b/scripts/mosh
@@ -16,7 +16,7 @@
 #   You should have received a copy of the GNU General Public License
 #   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-my $MOSH_VERSION = '1.09a';
+my $MOSH_VERSION = '1.09b';
 
 use warnings;
 use strict;