diff --git a/configure.in b/configure.in
index 0da40f095..eff4b35c7 100644
--- a/configure.in
+++ b/configure.in
@@ -2,7 +2,7 @@ AC_PREREQ(2.50)
 
 m4_define([mutter_major_version], [2])
 m4_define([mutter_minor_version], [31])
-m4_define([mutter_micro_version], [2])
+m4_define([mutter_micro_version], [4])
 
 m4_define([mutter_version],
           [mutter_major_version.mutter_minor_version.mutter_micro_version])