diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3a493dc..87f2d48 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,107 +1,111 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
 This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 ### Added
 ### Changed
 ### Deprecated
 ### Removed
 ### Fixed
 ### Security
 
+## [0.9.10] - 2021-05-31
+### Changed
+- Added an audit rule to log login attempts.
+
 ## [0.9.9] - 2020-12-14
 ### Changed
 - Set LimitNOFILE=1048576 in the guam.service file
 - Log readable messages and avoid crashes on known reasons for client connections to break.
 ### Fixed
 - Fixed a StartTLS regression
 
 ## [0.9.8] - 2020-10-26
 ### Fixed
 - Fixed performance regression with literals containing CRLFs.
 - Avoid buffering entire literal continuations
 
 ## [0.9.7] - 2020-04-15
 ### Fixed
 - Fixed processing of multiple commands arriving in the same packet.
 - Enable keepalive on incoming socket
 - Enabled full IMAP traffic logging on debug log level
 
 ## [0.9.6] - 2020-03-31
 ### Fixed
 - use iolist_to_binary to fix attachment downloading with K9-Mail
 
 ## [0.9.5] - 2019-11-18
 ### Added
 - Support for LIST-STATUS and LIST-EXTENDED LIST responses
 ### Fixed
 - Client buffer handling via guam-0.9.2-stalling-client-buffer-and-split-command-handling patch
 
 ## [0.9.4] - 2018-02-19
 ### Fixed
 - Support empty lines from the client
 
 ## [0.9.3] - 2017-05-03
 ### Fixed
 - With a properly crafted folder list, clients could receive empty lines
   in filtered folder listings
 
 ## [0.9.2] - 2017-03-21
 ### Fixed
 - Fix client message processing when there are no active rules
 
 ## [0.9.1] - 2016-02-20
 ### Fixed
 - Improve SSL connection accepts (prevent timing errors on the socket)
 - Support fragmentary messages from clients (e.g. tag in one packet, cmd in another)
 
 ## [0.9.0] - 2016-07-29
 ### Added
 - bind to a network interface (rather than an IP/host) with net_iface
 
 ### Changed
 - handle the implicit ssl upgrade a bit more manually, allowing faster
   replenish of the listener pool and simplifying socket setup code
 - upgraded build to rebar3
 - Upgraded eimap to 0.3.0
 
 ### Fixed
 - fix CAPABILITY response (was CAPABILITIES)
 
 ## [0.8.3] - 2016-08-08
 ### Fixed
 - always close ssl sockets as an ssl socket
 - keep listen_socket separate from socket
 - not required to make the socket active to accept connections
 - ensure eimap processes are always terminated in all cases
 
 ## [0.8.2] - 2016-07-08
 ### Added
 - listener_pool_size configuration option for listeners
 ### Changed
 - Default size of listener pool drops to 10 from 20
 - Rate limit (by introducing a short wait) connection accept()s
 ### Fixed
 - Prevent starvation of the session pool due to clients dropping connections
   pre-accept()
 
 ## [0.8.1] - 2016-07-06
 ### Added
 - ipv6 connections
 ### Changed
 - update to eimap 0.2.5
 ### Fixed
 - Ignore non-listing LIST commands (e.g. requests for the root/separator)
 - Tidy up the server greetings
 
 ## [0.8.0] - 2016-06-08
 ### Added
 - systemd service module
 - sysv init script
 ### Changed
 - Upgraded eimap to 0.2.4
 ### Fixed
 - Support more variations of the LIST command args in the filter_groupware rule
 
diff --git a/apps/kolab_guam/src/kolab_guam.app.src b/apps/kolab_guam/src/kolab_guam.app.src
index 78e09a8..46b5e24 100644
--- a/apps/kolab_guam/src/kolab_guam.app.src
+++ b/apps/kolab_guam/src/kolab_guam.app.src
@@ -1,22 +1,22 @@
 %% -*- tab-width: 4;erlang-indent-level: 4;indent-tabs-mode: nil -*-
 {application, kolab_guam,
  [
   {description, "IMAP session proxy"},
-  {vsn, "0.9.9"},
+  {vsn, "0.9.10"},
   {registered, []},
   {applications, [
                   kernel,
                   stdlib,
                   compiler,
                   syntax_tools,
                   goldrush,
                   eimap,
                   lager,
                   lager_syslog,
                   crypto,
                   ssl
                  ]},
   {mod, { kolab_guam, []}},
   {env, [
     ]}
  ]}.
diff --git a/rebar.config b/rebar.config
index c292b8d..4cda528 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,41 +1,41 @@
 %% -*- tab-width: 4;erlang-indent-level: 4;indent-tabs-mode: nil -*-
 %% ex: ft=erlang ts=4 sw=4 et
 
 { erl_opts, [
             { parse_transform, lager_transform },
             { platform_define, "(linux|solaris|freebsd|darwin)", 'HAVE_SENDFILE' },
             debug_info,
             fail_on_warning
             ]
 }.
 { deps, [
     lager,
     { lager_syslog, "3.*", { git, "git://github.com/basho/lager_syslog.git", { tag, "3.0.1" } } },
     { eimap, ".*", { git, "https://git.kolab.org/diffusion/EI/eimap.git", { tag, "0.3.0" } } }
     %% pull in the proper version of meck before jobs 0.3 gets around to pulling in the wrong version
    ]
 }.
 
 { sub_dirs, [
     "apps/kolab_guam"
  ]}.
 { erl_first_files, ["apps/kolab_guam/src/kolab_guam_rule.erl"] }.
 { eunit_opts, [verbose, {skip_deps, true }] }.
 { eunit_exclude_deps, true }.
 { cover_enabled, true }.
-{ relx, [ { release, { guam, "0.9.9" }, [kolab_guam]},
+{ relx, [ { release, { guam, "0.9.10" }, [kolab_guam]},
                 { dev_mode, false },
                 { include_erts, false },
                 { extended_start_script, true },
                 { overlay, [
                          { mkdir, "log/sasl" },
                          { template, "priv/sys.config", "etc/sys.config" },
                          { copy, "priv/vm.args", "vm.args" }
                      ]
                 }
          ]
 }.
 
 %%{require_otp_vsn, "17"}.
 { pre_hooks, [ { clean, "rm -fr ebin erl_crash.dump" } ] }.