diff --git a/HISTORY.rst b/HISTORY.rst
index d63704f53..c13cb9a53 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -2,7 +2,10 @@
 Changelog
 =========
 
-* `master <https://github.com/svenkreiss/pysparkling/compare/v0.3.21...master>`_
+* `master <https://github.com/svenkreiss/pysparkling/compare/v0.3.22...master>`_
+* `v0.3.22 <https://github.com/svenkreiss/pysparkling/compare/v0.3.21...v0.3.22>`_ (2016-06-18)
+    * reimplement RDD.groupByKey()
+    * clean up of docstrings
 * `v0.3.21 <https://github.com/svenkreiss/pysparkling/compare/v0.3.20...v0.3.21>`_ (2016-05-31)
     * faster text file reading by using ``io.TextIOWrapper`` for decoding
 * `v0.3.20 <https://github.com/svenkreiss/pysparkling/compare/v0.3.19...v0.3.20>`_ (2016-05-01)
diff --git a/pysparkling/__init__.py b/pysparkling/__init__.py
index 4b32268f5..16de49119 100644
--- a/pysparkling/__init__.py
+++ b/pysparkling/__init__.py
@@ -1,7 +1,7 @@
 """pysparkling module."""
 # flake8: noqa
 
-__version__ = '0.3.21'
+__version__ = '0.3.22'
 
 from .exceptions import (FileAlreadyExistsException,
                          ConnectionException)