diff --git a/configure.ac b/configure.ac
index eb3af876d..0266b6ab6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -13,8 +13,8 @@ AC_PREREQ(2.62)
 
 m4_define([gtk_major_version], [2])
 m4_define([gtk_minor_version], [24])
-m4_define([gtk_micro_version], [21])
-m4_define([gtk_interface_age], [21])
+m4_define([gtk_micro_version], [22])
+m4_define([gtk_interface_age], [22])
 m4_define([gtk_binary_age],
           [m4_eval(100 * gtk_minor_version + gtk_micro_version)])
 m4_define([gtk_version],