diff --git a/ChangeLog b/ChangeLog
index 8d3997e..09856c4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2007-01-22  Lucas Rocha  <lucasr@gnome.org>
+
+	* configure.in: post-release version bump.
+
 2007-01-22  Lucas Rocha  <lucasr@gnome.org>
 
 	* NEWS: release 2.17.90
diff --git a/configure.in b/configure.in
index 45c779b..3c549ae 100644
--- a/configure.in
+++ b/configure.in
@@ -1,4 +1,4 @@
-AC_INIT([Zenity],[2.17.90],[http://bugzilla.gnome.org/enter_bug.cgi?product=zenity],[zenity])
+AC_INIT([Zenity],[2.17.91],[http://bugzilla.gnome.org/enter_bug.cgi?product=zenity],[zenity])
 
 AC_PREREQ([2.59])