diff --git a/CHANGELOG.md b/CHANGELOG.md
index caf6a2e0..e2e41325 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 0.22.1 (2018-07-01)
+
+### Improvements
+
+* Reduced amount of RAM used when checking a large number of files.
+
 ## 0.22.0 (2018-05-09)
 
 ### New features and improvements
diff --git a/README.md b/README.md
index 0cb42fce..9e7b98c1 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@ If it is not possible to install [LuaFileSystem](http://keplerproject.github.io/
 ### Windows binary download
 
 For Windows there is single-file 64-bit binary distribution, bundling Lua 5.3.4, Luacheck, LuaFileSystem, and LuaLanes using [LuaStatic](https://github.com/ers35/luastatic):
-[download](https://github.com/mpeterv/luacheck/releases/download/0.22.0/luacheck.exe).
+[download](https://github.com/mpeterv/luacheck/releases/download/0.22.1/luacheck.exe).
 
 ## Basic usage
 
@@ -107,7 +107,7 @@ Documentation can be built using [Sphinx](http://sphinx-doc.org/): `sphinx-build
 
 ## Development
 
-Luacheck is currently in development. The latest released version is 0.22.0. The interface of the `luacheck` module may change between minor releases. The command line interface is fairly stable.
+Luacheck is currently in development. The latest released version is 0.22.1. The interface of the `luacheck` module may change between minor releases. The command line interface is fairly stable.
 
 Use the Luacheck issue tracker on GitHub to submit bugs, suggestions and questions. Any pull requests are welcome, too.
 
diff --git a/docsrc/conf.py b/docsrc/conf.py
index 4c187899..29721478 100644
--- a/docsrc/conf.py
+++ b/docsrc/conf.py
@@ -48,9 +48,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '0.22.0'
+version = '0.22.1'
 # The full version, including alpha/beta/rc tags.
-release = '0.22.0'
+release = '0.22.1'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/docsrc/index.rst b/docsrc/index.rst
index b85c39e2..896cce01 100644
--- a/docsrc/index.rst
+++ b/docsrc/index.rst
@@ -11,4 +11,4 @@ Contents:
    inline
    module
 
-This is documentation for 0.22.0 version of `Luacheck <https://github.com/mpeterv/luacheck/>`_, a linter for `Lua <https://www.lua.org/>`_.
+This is documentation for 0.22.1 version of `Luacheck <https://github.com/mpeterv/luacheck/>`_, a linter for `Lua <https://www.lua.org/>`_.
diff --git a/src/luacheck/init.lua b/src/luacheck/init.lua
index df9ac302..d5637c65 100644
--- a/src/luacheck/init.lua
+++ b/src/luacheck/init.lua
@@ -5,7 +5,7 @@ local format = require "luacheck.format"
 local utils = require "luacheck.utils"
 
 local luacheck = {
-   _VERSION = "0.22.0"
+   _VERSION = "0.22.1"
 }
 
 local function raw_validate_options(fname, opts, stds, context)