diff --git a/ChangeLog b/ChangeLog
index 5f6e56eb..6b9f2753 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+24/7/22 started 8.13.1
+- fix im7 feature detection in meson
+
 21/11/21 started 8.13
 - configure fails for requested but unmet dependencies [remicollet]
 - add support for another quantiser [DarthSim]
diff --git a/configure.ac b/configure.ac
index 2ed8b9a4..1d0093f4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 
 # also update the version number in the m4 macros below
 
-AC_INIT([vips], [8.13.0], [vipsip@jiscmail.ac.uk])
+AC_INIT([vips], [8.13.1], [vipsip@jiscmail.ac.uk])
 # required for gobject-introspection
 AC_PREREQ([2.69])
 
@@ -18,7 +18,7 @@ AC_CONFIG_MACRO_DIR([m4])
 # user-visible library versioning
 m4_define([vips_major_version], [8])
 m4_define([vips_minor_version], [13])
-m4_define([vips_micro_version], [0])
+m4_define([vips_micro_version], [1])
 m4_define([vips_version],
           [vips_major_version.vips_minor_version.vips_micro_version])