diff --git a/ChangeLog b/ChangeLog
index 3754989535..107231eac2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2007-12-04  Matthias Clasen  <mclasen@redhat.com>
+
+	* configure.in: Bump version
+
 2007-12-04  Matthias Clasen  <mclasen@redhat.com>
 
 	* === Released 2.12.3 ===
diff --git a/configure.in b/configure.in
index 68bd27f19b..3896bbb0d9 100644
--- a/configure.in
+++ b/configure.in
@@ -12,10 +12,10 @@ AC_PREREQ(2.54)
 
 m4_define([gtk_major_version], [2])
 m4_define([gtk_minor_version], [12])
-m4_define([gtk_micro_version], [3])
+m4_define([gtk_micro_version], [4])
 m4_define([gtk_version],
           [gtk_major_version.gtk_minor_version.gtk_micro_version])
-m4_define([gtk_interface_age], [3])
+m4_define([gtk_interface_age], [4])
 m4_define([gtk_binary_age],
           [m4_eval(100 * gtk_minor_version + gtk_micro_version)])
 # This is the X.Y used in -lgtk-FOO-X.Y