diff --git a/CHANGELOG.md b/CHANGELOG.md
index aada2631f8..f6ddc604df 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,80 @@
+# v1.16
+
+## Release v1.16.0 - 2023/03/29
+
+### Enhancement
+
+* in_tcp: Add `send_keepalive_packet` option
+  https://github.com/fluent/fluentd/pull/3961
+* buffer: backup broken file chunk
+  https://github.com/fluent/fluentd/pull/4025
+* Add warning messages for restoring buffer with `flush_at_shutdown true`
+  https://github.com/fluent/fluentd/pull/4027
+* Add logs for time period of restored buffer possibly broken
+  https://github.com/fluent/fluentd/pull/4028
+
+### Bug Fix
+
+* http_server_helper: Fix format of log messages originating from Async gem
+  https://github.com/fluent/fluentd/pull/3987
+* Change to not generate a sigdump file after receiving a `SIGTERM` signal on
+  non-Windows
+  https://github.com/fluent/fluentd/pull/4034
+  https://github.com/fluent/fluentd/pull/4043
+* out_forward: fix error of ack handling conflict on stopping with
+  `require_ack_response` enabled
+  https://github.com/fluent/fluentd/pull/4030
+* Fix problem that some `system` configs are not reflected
+  https://github.com/fluent/fluentd/pull/4064
+  https://github.com/fluent/fluentd/pull/4065
+  https://github.com/fluent/fluentd/pull/4086
+  https://github.com/fluent/fluentd/pull/4090
+  https://github.com/fluent/fluentd/pull/4096
+* Fix bug that the logger outputs some initial log messages without applying
+  some settings such as `format`
+  https://github.com/fluent/fluentd/pull/4091
+* Windows: Fix a bug that the wrong log file is reopened with log rotate setting
+  when flushing or graceful reloading
+  https://github.com/fluent/fluentd/pull/4054
+* Fix race condition of out_secondary_file
+  https://github.com/fluent/fluentd/pull/4081
+* Suppress warning using different secondary for out_secondary_file
+  https://github.com/fluent/fluentd/pull/4087
+* Fix value of `system_config.workers` at `run_configure`.
+  Change argument type of `Fluent::Plugin::Base::configure()` to
+  `Fluent::Config::Element` only.
+  https://github.com/fluent/fluentd/pull/4066
+* Fix bug that Fluentd sometimes tries to use an unavailable port and fails to
+  start on Windows
+  https://github.com/fluent/fluentd/pull/4092
+
+### Misc
+
+* Add method for testing `filtered_with_time`
+  https://github.com/fluent/fluentd/pull/3899
+* Replace `$$` with `Process.pid`
+  https://github.com/fluent/fluentd/pull/4040
+* Relax required webric gem version
+  https://github.com/fluent/fluentd/pull/4061
+* CI fixes to support Ruby 3.2
+  https://github.com/fluent/fluentd/pull/3968
+  https://github.com/fluent/fluentd/pull/3996
+  https://github.com/fluent/fluentd/pull/3997
+* Other CI fixes
+  https://github.com/fluent/fluentd/pull/3969
+  https://github.com/fluent/fluentd/pull/3990
+  https://github.com/fluent/fluentd/pull/4013
+  https://github.com/fluent/fluentd/pull/4033
+  https://github.com/fluent/fluentd/pull/4044
+  https://github.com/fluent/fluentd/pull/4050
+  https://github.com/fluent/fluentd/pull/4062
+  https://github.com/fluent/fluentd/pull/4074
+  https://github.com/fluent/fluentd/pull/4082
+  https://github.com/fluent/fluentd/pull/4085
+* Update MAINTAINERS.md
+  https://github.com/fluent/fluentd/pull/4026
+  https://github.com/fluent/fluentd/pull/4069
+
 # v1.15
 
 ## Release v1.15.3 - 2022/11/02
diff --git a/lib/fluent/version.rb b/lib/fluent/version.rb
index df987f8bdd..2045ff81b4 100644
--- a/lib/fluent/version.rb
+++ b/lib/fluent/version.rb
@@ -16,6 +16,6 @@
 
 module Fluent
 
-  VERSION = '1.15.3'
+  VERSION = '1.16.0'
 
 end