diff --git a/configure.ac b/configure.ac
index c5a1dbd6f..735b871d4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -10,7 +10,7 @@
 # - increase clutter_interface_version to the next odd number
 m4_define([clutter_major_version], [1])
 m4_define([clutter_minor_version], [9])
-m4_define([clutter_micro_version], [12])
+m4_define([clutter_micro_version], [13])
 
 # • for stable releases: increase the interface age by 1 for each release;
 #   if the API changes, set to 0. interface_age and binary_age are used to