diff --git a/configure.ac b/configure.ac
index 2b8987f51..fb25bbec2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,7 +9,7 @@
 # - increase clutter_micro_version to the next odd number
 # - increase clutter_interface_version to the next odd number
 m4_define([clutter_major_version], [1])
-m4_define([clutter_minor_version], [22])
+m4_define([clutter_minor_version], [21])
 m4_define([clutter_micro_version], [1])
 
 # • for stable releases: increase the interface age by 1 for each release;