diff --git a/ChangeLog b/ChangeLog
index 2bbc75e35..b4571d965 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2007-12-14  Thomas Thurman  <thomas@thurman.org.uk>
+
+        * configure.in: Post-release bump to 2.21.5.
+
 2007-12-14  Thomas Thurman  <tthurman@gnome.org>
 
         * NEWS: 2.21.3 release.
diff --git a/configure.in b/configure.in
index 4b788b4dc..af7311e76 100644
--- a/configure.in
+++ b/configure.in
@@ -4,7 +4,7 @@ m4_define([metacity_major_version], [2])
 m4_define([metacity_minor_version], [21])
 # Fibonacci sequence for micro version numbering:
 # 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987
-m4_define([metacity_micro_version], [3])
+m4_define([metacity_micro_version], [5])
 
 m4_define([metacity_version],
           [metacity_major_version.metacity_minor_version.metacity_micro_version])