diff --git a/README.md b/README.md
index 989cde8..d91fa75 100644
--- a/README.md
+++ b/README.md
@@ -37,6 +37,7 @@ Tests are located in the `spec` directory and can be run using [busted](http://o
   - `README.md` (at the top)
   - `date.lua` (at the top, and exported field `date.version`)
   - `index.html` (appr. line 20)
+- update changelog below
 - update rockspec
 - commit as `release x.y.z` (omit trailing 0)
 - tag as `version_x.y.z` (omit trailing 0)
@@ -45,9 +46,20 @@ Tests are located in the `spec` directory and can be run using [busted](http://o
 
 ### Changes:
 
-- v2.2 add 'centuryflip' to set 2 digit year interpretation [#26](https://github.com/Tieske/date/pull/26)
-- v2.1.3 fix rockspec for Lua 5.4
-- v2.1.2 fix scientific notation [#9](https://github.com/Tieske/date/pull/9), now available for Lua 5.3
-- v2.1.1 fix for '>=' operator [#3](https://github.com/Tieske/date/pull/3), added test suite, added Travis CI, license MIT
-- v2.1 Lua 5.2 support. Global 'date' will no longer be set.
-- v2.0 original by Jas Latrix
+#### v2.2.1 released 6-Sep-2023
+  - fix parsing timezone offset after a decimal number [#33](https://github.com/Tieske/date/pull/33)
+  - also accept "," as a decimal separator [#31](https://github.com/Tieske/date/pull/31)
+  - fix bad function call (no functional impact) [#34](https://github.com/Tieske/date/pull/34)
+
+#### v2.2
+  - add 'centuryflip' to set 2 digit year interpretation [#26](https://github.com/Tieske/date/pull/26)
+#### v2.1.3
+  - fix rockspec for Lua 5.4
+#### v2.1.2
+  - fix scientific notation [#9](https://github.com/Tieske/date/pull/9), now available for Lua 5.3
+#### v2.1.1
+  - fix for '>=' operator [#3](https://github.com/Tieske/date/pull/3), added test suite, added Travis CI, license MIT
+#### v2.1
+  - Lua 5.2 support. Global 'date' will no longer be set.
+#### v2.0
+  - original by Jas Latrix
diff --git a/docs/index.html b/docs/index.html
index 716ced5..af4b482 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -17,7 +17,7 @@
     <div class="titlepage">
       <div>
         <div>
-          <h2 class="title"><a name="id90891" id="id90891"></a>LuaDate v2.2</h2>
+          <h2 class="title"><a name="id90891" id="id90891"></a>LuaDate v2.2.1</h2>
         </div>
 
         <div>
diff --git a/rockspecs/date-2.2.1-1.rockspec b/rockspecs/date-2.2.1-1.rockspec
new file mode 100644
index 0000000..237e49c
--- /dev/null
+++ b/rockspecs/date-2.2.1-1.rockspec
@@ -0,0 +1,37 @@
+local package_name = "date"
+local package_version = "2.2.1"
+local rockspec_revision = "1"
+local github_account_name = "Tieske"
+local github_repo_name = package_name
+local git_checkout = package_version == "dev" and "master" or ("version_"..package_version)
+
+package = package_name
+version = package_version .. "-" .. rockspec_revision
+
+source = {
+  url = "git+https://github.com/"..github_account_name.."/"..github_repo_name..".git",
+  branch = git_checkout
+}
+
+description = {
+  summary = "Date & Time module for Lua 5.x",
+  detailed = [[
+    Pure Lua Date & Time module for Lua 5.x featuring date and time string
+    parsing, time addition & subtraction, time span calculation, support for
+    ISO 8601 dates, local time support, strftime-like formatting.
+  ]],
+  license = "MIT",
+  homepage = "https://github.com/"..github_account_name.."/"..github_repo_name,
+}
+
+dependencies = {
+  "lua >= 5.0, < 5.5"
+}
+
+build = {
+  type = "builtin",
+  modules = {
+    date = "src/date.lua"
+  },
+  copy_directories = { "docs" },
+}
diff --git a/src/date.lua b/src/date.lua
index f57c30f..1f0660e 100644
--- a/src/date.lua
+++ b/src/date.lua
@@ -1,7 +1,7 @@
 ---------------------------------------------------------------------------------------
 -- Module for date and time calculations
 --
--- Version 2.2
+-- Version 2.2.1
 -- Copyright (C) 2005-2006, by Jas Latrix (jastejada@yahoo.com)
 -- Copyright (C) 2013-2021, by Thijs Schreijer
 -- Licensed under MIT, http://opensource.org/licenses/MIT
@@ -201,7 +201,7 @@
   do
     local major = 2
     local minor = 2
-    local revision = 0
+    local revision = 1
     date.version = major * 10000000 + minor * 10000 + revision
   end
 --#end -- not DATE_OBJECT_AFX