diff --git a/NEWS.org b/NEWS.org
index f4aa2d95..75a8a35d 100644
--- a/NEWS.org
+++ b/NEWS.org
@@ -75,10 +75,12 @@
      flags for use in queries. The information is the same information that ~mu~
      uses and so stays up to date.
 
-   - a new message field ~changed~, which refers to the time/date of the last time
-     a message was changed (the file ~ctime~) and a new flag ~personal~ to search
-     for "personal" messages, which are defined as a message with at least one
-     personal contact.
+   - a new message field ~changed~, which refers to the time/date of the last
+     time a message was changed (the file ~ctime~)
+
+   - new message flags ~personal~ to search for "personal" messages, which are
+     defined as a message with at least one personal contact, and ~calendar~ for
+     messages with calendar-invitations.
 
    - message sexps are now cached in the store, which makes delivering
      sexp-based search results (as used by ~mu4e~) much faster.
diff --git a/configure.ac b/configure.ac
index fc284b3e..ad390b63 100644
--- a/configure.ac
+++ b/configure.ac
@@ -15,7 +15,7 @@
 ## Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 
 AC_PREREQ([2.68])
-AC_INIT([mu],[1.7.26],[https://github.com/djcb/mu/issues],[mu])
+AC_INIT([mu],[1.7.27],[https://github.com/djcb/mu/issues],[mu])
 AC_COPYRIGHT([Copyright (C) 2008-2022 Dirk-Jan C. Binnema])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_SRCDIR([mu/mu.cc])
@@ -190,7 +190,7 @@ PKG_CHECK_MODULES(XAPIAN,xapian-core >= 1.4,[
 # note that MU_STORE_SCHEMA_VERSION does not follow mu versioning, as we
 # hopefully don't have updates for each version; also, this has nothing to do
 # with Xapian's software versionx
-AC_DEFINE(MU_STORE_SCHEMA_VERSION,["463"],['Schema' version of the database])
+AC_DEFINE(MU_STORE_SCHEMA_VERSION,["464"],['Schema' version of the database])
 ###############################################################################
 
 ################################################################################
diff --git a/meson.build b/meson.build
index 003d2169..539c44d7 100644
--- a/meson.build
+++ b/meson.build
@@ -18,7 +18,7 @@
 # project setup
 #
 project('mu', ['c', 'cpp'],
-	version: '1.7.26',
+	version: '1.7.27',
 	meson_version: '>= 0.52.0', # debian 10
 	license: 'GPL-3.0-or-later',
 	default_options : [
@@ -75,7 +75,7 @@ endforeach
 # config.h setup
 #
 config_h_data=configuration_data()
-config_h_data.set_quoted('MU_STORE_SCHEMA_VERSION', '463')
+config_h_data.set_quoted('MU_STORE_SCHEMA_VERSION', '464')
 config_h_data.set_quoted('PACKAGE_VERSION', meson.project_version())
 config_h_data.set_quoted('PACKAGE_STRING', meson.project_name() + ' ' +
                                            meson.project_version())