diff --git a/CHANGELOG.md b/CHANGELOG.md
index 117a7076..69be4b85 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Change Log
 
-## 0.21.1 (unreleased)
+## 0.21.1 (2017-09-10)
 
 ### Fixes
 
diff --git a/README.md b/README.md
index c5f38bd2..45be9539 100644
--- a/README.md
+++ b/README.md
@@ -37,13 +37,13 @@ If it is not possible to install [LuaFileSystem](http://keplerproject.github.io/
 ### Binary download
 
 For Windows there is experimental 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/0.21.0/luacheck.exe).
+[download](https://github.com/mpeterv/luacheck/releases/download/0.21.1/luacheck.exe).
 
 ### Manual installation
 
 For manual installation, only a Lua interpreter binary is required.
 
-1. Download and unpack latest Luacheck release ([.zip](https://github.com/mpeterv/luacheck/archive/0.21.0.zip), [.tar.gz](https://github.com/mpeterv/luacheck/archive/0.21.0.tar.gz)).
+1. Download and unpack latest Luacheck release ([.zip](https://github.com/mpeterv/luacheck/archive/0.21.1.zip), [.tar.gz](https://github.com/mpeterv/luacheck/archive/0.21.1.tar.gz)).
 2. Run `install.lua <path>` script using the Lua interpreter. If Lua interpreter is not in `PATH`, invoke it using absolute path.
 3. Add `<path>/bin` to PATH or run Luacheck as `<path>/bin/luacheck`.
 
@@ -113,7 +113,7 @@ Documentation can be built using [Sphinx](http://sphinx-doc.org/): `sphinx-build
 
 ## Development
 
-Luacheck is currently in development. The latest released version is 0.21.0. 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 0.21.1. 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 bb8e74c1..7e1c19b1 100644
--- a/docsrc/conf.py
+++ b/docsrc/conf.py
@@ -48,9 +48,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '0.21.0'
+version = '0.21.1'
 # The full version, including alpha/beta/rc tags.
-release = '0.21.0'
+release = '0.21.1'
 
 # 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 af479045..2509164a 100644
--- a/docsrc/index.rst
+++ b/docsrc/index.rst
@@ -11,4 +11,4 @@ Contents:
    inline
    module
 
-This is documentation for 0.21.0 version of `Luacheck <https://github.com/mpeterv/luacheck/>`_, a linter for `Lua <http://www.lua.org/>`_.
+This is documentation for 0.21.1 version of `Luacheck <https://github.com/mpeterv/luacheck/>`_, a linter for `Lua <http://www.lua.org/>`_.
diff --git a/src/luacheck/init.lua b/src/luacheck/init.lua
index 051a5302..3b87a79d 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 = "0.21.0"
+   _VERSION = "0.21.1"
 }
 
 local function raw_validate_options(fname, opts)