diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index e389d0a..7dddea0 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -716,7 +716,6 @@
 -  Fixed a bug (#2061) - :doc:`Routing Class <general/routing>` didn't properly sanitize directory, controller and function triggers with **enable_query_strings** set to TRUE.
 -  Fixed a bug - SQLSRV didn't support ``escape_like_str()`` or escaping an array of values.
 -  Fixed a bug - :doc:`Database Results <database/results>` method ``list_fields()`` didn't reset its field pointer for the 'mysql', 'mysqli' and 'mssql' drivers.
--  Fixed a bug (#73) - :doc:`Security Library <libraries/security>` method ``sanitize_filename()`` could be tricked by an XSS attack.
 -  Fixed a bug (#2211) - :doc:`Migration Library <libraries/migration>` extensions couldn't execute ``CI_Migration::__construct()``.
 -  Fixed a bug (#2255) - :doc:`Email Library <libraries/email>` didn't apply *smtp_timeout* to socket reads and writes.
 -  Fixed a bug (#2239) - :doc:`Email Library <libraries/email>` improperly handled the Subject when used with *bcc_batch_mode* resulting in E_WARNING messages and an empty Subject.
@@ -740,14 +739,12 @@
 -  Fixed a bug (#2609) - :doc:`Common function <general/common_functions>` :func:`get_config()` optional argument was only effective on first function call. Also, it can now add items, in addition to updating existing items.
 -  Fixed a bug in the 'postgre' :doc:`database <database/index>` driver where the connection ID wasn't passed to ``pg_escape_string()``.
 -  Fixed a bug (#33) - Script execution was terminated when an invalid cookie key was encountered.
--  Fixed a bug (#2681) - :doc:`Security Library <libraries/security>` method ``entity_decode()`` used the `PREG_REPLACE_EVAL` flag, which is deprecated since PHP 5.5.
 -  Fixed a bug (#2691) - nested :doc:`database <database/index>` transactions could end in a deadlock when an error is encountered with *db_debug* set to TRUE.
 -  Fixed a bug (#2515) - ``_exception_handler()`` used to send the 200 "OK" HTTP status code and didn't stop script exection even on fatal errors.
 -  Fixed a bug - Redis :doc:`Caching <libraries/caching>` driver didn't handle connection failures properly.
 -  Fixed a bug (#2756) - :doc:`Database Class <database/index>` executed the MySQL-specific `SET SESSION sql_mode` query for all drivers when the 'stricton' option is set.
 -  Fixed a bug (#2579) - :doc:`Query Builder <database/query_builder>` "no escape" functionality didn't work properly with query cache.
 -  Fixed a bug (#2237) - :doc:`Parser Library <libraries/parser>` failed if the same tag pair is used more than once within a template.
--  Fixed a bug (#2268) - :doc:`Security Library <libraries/security>` didn't properly match JavaScript events.
 -  Fixed a bug (#2143) - :doc:`Form Validation Library <libraries/form_validation>` didn't check for rule groups named in a *controller/method* manner when trying to load from a config file.
 -  Fixed a bug (#2762) - :doc:`Hooks Class <general/hooks>` didn't properly check if the called class/function exists.
 -  Fixed a bug (#148) - :doc:`Input Library <libraries/input>` internal method ``_clean_input_data()`` assumed that it data is URL-encoded, stripping certain character sequences from it.
@@ -758,7 +755,6 @@
 -  Fixed a bug where :doc:`User Agent Library <libraries/user_agent>` methods ``accept_charset()`` and ``accept_lang()`` didn't properly parse HTTP headers that contain spaces.
 -  Fixed a bug where *default_controller* was called instad of triggering a 404 error if the current route is in a controller directory.
 -  Fixed a bug (#2737) - :doc:`XML-RPC Library <libraries/xmlrpc>` used objects as array keys, which triggered E_NOTICE messages.
--  Fixed a bug (#2729) - :doc:`Security Library <libraries/security>` internal method ``_validate_entities()`` used overly-intrusive ``preg_replace()`` patterns that produced false-positives.
 -  Fixed a bug (#2771) - :doc:`Security Library <libraries/security>` method ``xss_clean()`` didn't take into account HTML5 entities.
 -  Fixed a bug (#2856) - ODBC method ``affected_rows()`` passed an incorrect value to ``odbc_num_rows()``.
 -  Fixed a bug (#43) :doc:`Image Manipulation Library <libraries/image_lib>` method ``text_watermark()`` didn't properly determine watermark placement.
@@ -770,6 +766,31 @@
 -  Fixed a bug (#3161) - :doc:`Cache Library <libraries/caching>` methods `increment()`, `decrement()` didn't auto-create non-existent items when using redis and/or file storage.
 -  Fixed a bug (#3189) - :doc:`Parser Library <libraries/parser>` used double replacement on ``key->value`` pairs, exposing a potential template injection vulnerability.
 
+Version 2.2.1
+=============
+
+Release Date: January 22, 2015
+
+-  General Changes
+
+   - Improved security in ``xss_clean()``.
+   - Updated timezones in :doc:`Date Helper <helpers/date_helper>`.
+
+Bug fixes for 2.2.1
+-------------------
+
+-  Fixed a bug (#3094) - Internal method ``CI_Input::_clean_input_data()`` breaks encrypted session cookies.
+-  Fixed a bug (#2268) - :doc:`Security Library <libraries/security>` method ``xss_clean()`` didn't properly match JavaScript events.
+-  Fixed a bug (#3309) - :doc:`Security Library <libraries/security>` method ``xss_clean()`` used an overly-invasive pattern to strip JS event handlers.
+-  Fixed a bug (#2771) - :doc:`Security Library <libraries/security>` method ``xss_clean()`` didn't take into account HTML5 entities.
+-  Fixed a bug (#73) - :doc:`Security Library <libraries/security>` method ``sanitize_filename()`` could be tricked by an XSS attack.
+-  Fixed a bug (#2681) - :doc:`Security Library <libraries/security>` method ``entity_decode()`` used the ``PREG_REPLACE_EVAL`` flag, which is deprecated since PHP 5.5.
+-  Fixed a bug (#3302) - Internal function ``get_config()`` triggered an E_NOTICE message on PHP 5.6.
+-  Fixed a bug (#2508) - :doc:`Config Library <libraries/config>` didn't properly detect if the current request is via HTTPS.
+-  Fixed a bug (#3314) - SQLSRV :doc:`Database driver <database/index>`'s method ``count_all()`` didn't escape the supplied table name.
+-  Fixed a bug (#3404) - MySQLi :doc:`Database driver <database/index>`'s method ``escape_str()`` had a wrong fallback to ``mysql_escape_string()`` when there was no active connection.
+-  Fixed a bug in the :doc:`Session Library <libraries/sessions>` where session ID regeneration occurred during AJAX requests.
+
 Version 2.2.0
 =============
 
diff --git a/user_guide_src/source/installation/downloads.rst b/user_guide_src/source/installation/downloads.rst
index 6302985..3b4ebe6 100644
--- a/user_guide_src/source/installation/downloads.rst
+++ b/user_guide_src/source/installation/downloads.rst
@@ -2,40 +2,14 @@
 Downloading CodeIgniter
 #######################
 
--  `CodeIgniter v3.0.0 (Current version) <http://ellislab.com/codeigniter/download>`_
--  `CodeIgniter v2.2.0 <http://ellislab.com/asset/ci_download_files/CodeIgniter_2.2.0.zip>`_ (MD5 Checksum: dbfddde4ec0b12027aee5156fbdd634b)
--  `CodeIgniter v2.1.4 <http://ellislab.com/asset/ci_download_files/CodeIgniter_2.1.4.zip>`_ (MD5 Checksum: e74a296c1d412a855c025b9cd468a513)
--  `CodeIgniter v2.1.3 <http://ellislab.com/asset/ci_download_files/CodeIgniter_2.1.3.zip>`_ (MD5 Checksum: 781d06be06eaa36f10759ef82c8594d5)
--  `CodeIgniter v2.1.2 <http://ellislab.com/asset/ci_download_files/CodeIgniter_2.1.2.zip>`_ (MD5 Checksum: c7a2980dff2774c97bd38bfbf450d8d5)
--  `CodeIgniter v2.1.1 <http://ellislab.com/asset/ci_download_files/CodeIgniter_2.1.1.zip>`_ (MD5 Checksum: c4aa5f188f4ff16f919607b46a16c76c)
--  `CodeIgniter v2.1.0 <http://ellislab.com/asset/ci_download_files/CodeIgniter_2.1.0.zip>`_ (MD5 Checksum: 8cb676b0f831114935d7dd1ae2e0d490)
--  `CodeIgniter v2.0.3 <http://ellislab.com/asset/ci_download_files/CodeIgniter_2.0.3.zip>`_ (MD5 Checksum: 910475d50daf088bdd949c3d35b444d9)
--  `CodeIgniter v2.0.2 <http://ellislab.com/asset/ci_download_files/CodeIgniter_2.0.2.zip>`_ (MD5 Checksum: e75bab8cf27d2fb2483c5bb61b85a524)
--  `CodeIgniter v2.0.1 <http://ellislab.com/asset/ci_download_files/CodeIgniter_2.0.1.zip>`_ (MD5 Checksum: 675aa95896bfb16467436c0484f15f1f)
--  `CodeIgniter v2.0.0 <http://ellislab.com/asset/ci_download_files/CodeIgniter_2.0.0.zip>`_ (MD5 Checksum: bd657863de45dbb397f3b3dbc4f13abb)
--  `CodeIgniter v1.7.3 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.7.3.zip>`_ (MD5 Checksum: 16f50e7df4f44c1defe18355131049e9)
--  `CodeIgniter v1.7.2 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.7.2.zip>`_ (MD5 Checksum: ff2f4d1b3ab921f91e006f38b3ae6540)
--  `CodeIgniter v1.7.1 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.7.1.zip>`_ (MD5 Checksum: deca9709cf21b26dc0e4ec040b37e866)
--  `CodeIgniter v1.7.0 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.7.0.zip>`_ (MD5 Checksum: 28037f2071f940d8756864460d949045)
--  `CodeIgniter v1.6.3 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.6.3.zip>`_ (MD5 Checksum: 5ffab52b39b235ed6bd08ee5dd64d2f6)
--  `CodeIgniter v1.6.2 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.6.2.zip>`_ (MD5 Checksum: 0922830f96dfd40874b39ad018a49206)
--  `CodeIgniter v1.6.1 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.6.1.zip>`_ (MD5 Checksum: cc3f0b566e3654d351fa067aeee9bced)
--  `CodeIgniter v1.6.0 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.6.0.zip>`_ (MD5 Checksum: 89efabb8c1d57bb51071e6a20bb5590d)
--  `CodeIgniter v1.5.4 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.5.4.zip>`_ (MD5 Checksum: 0d6cc66b01d5ddecde483b3d5f51e4f8)
--  `CodeIgniter v1.5.3 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.5.3.zip>`_ (MD5 Checksum: f44dd21d34a2842bd052879ca5de6630)
--  `CodeIgniter v1.5.2 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.5.2.zip>`_ (MD5 Checksum: 78e7106b271f75af48e626f6e923c1aa)
--  `CodeIgniter v1.5.1 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.5.1.zip>`_ (MD5 Checksum: 9dfd0dbed4f283a42a817e1e88f97481)
--  `CodeIgniter v1.5.0 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.5.0.zip>`_ (MD5 Checksum: 116b805eae4b7e78ddd43a8aee733632)
--  `CodeIgniter v1.4.1 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.4.1.zip>`_ (MD5 Checksum: 470005a83772e9d2e99dec2b4058e584)
--  `CodeIgniter v1.4.0 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.4.0.zip>`_ (MD5 Checksum: 43ca6ff3447d6b5681f98a328b386338)
--  `CodeIgniter v1.3.3 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.3.3.zip>`_ (MD5 Checksum: 55692ba4b55b53b58e4514e310288981)
--  `CodeIgniter v1.3.2 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.3.2.zip>`_ (MD5 Checksum: 7dace6e1d6245b569943e8df952c7637)
--  `CodeIgniter v1.3.1 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.3.1.zip>`_ (MD5 Checksum: f6c6f00830c60d7f98b948269ee81069)
--  `CodeIgniter v1.3 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.3.zip>`_ (MD5 Checksum: 03b2f796df6af808ecff3a18b6000477)
--  `CodeIgniter v1.2 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.2.zip>`_ (MD5 Checksum: f9289814fabe102bc35beb791d0c0f62)
--  `CodeIgniter v1.1 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.1b.zip>`_ (MD5 Checksum: bf4cabb6a3ea3122a974270b8044befb)
--  `CodeIgniter v1.0 <http://ellislab.com/asset/ci_download_files/CodeIgniter_1.0b.zip>`_ (MD5 Checksum: 427ca4255e2bdaacee976de1aa143ea0)
-
+-  `CodeIgniter v3.0.0 (Current version) <https://github.com/bcit-ci/CodeIgniter/archive/develop.zip>`_
+-  `CodeIgniter v2.2.1 <https://github.com/bcit-ci/CodeIgniter/archive/2.2.1.zip>`_
+-  `CodeIgniter v2.2.0 <https://github.com/bcit-ci/CodeIgniter/archive/2.2.0.zip>`_
+-  `CodeIgniter v2.1.4 <https://github.com/bcit-ci/CodeIgniter/archive/2.1.4.zip>`_
+-  `CodeIgniter v2.1.3 <https://github.com/bcit-ci/CodeIgniter/archive/2.1.3.zip>`_
+-  `CodeIgniter v2.1.2 <https://github.com/bcit-ci/CodeIgniter/archive/2.1.2.zip>`_
+-  `CodeIgniter v2.1.1 <https://github.com/bcit-ci/CodeIgniter/archive/2.1.1.zip>`_
+-  `CodeIgniter v2.1.0 <https://github.com/bcit-ci/CodeIgniter/archive/v2.1.0.zip>`_
 
 ******
 GitHub
diff --git a/user_guide_src/source/installation/upgrade_221.rst b/user_guide_src/source/installation/upgrade_221.rst
new file mode 100644
index 0000000..4af7386
--- /dev/null
+++ b/user_guide_src/source/installation/upgrade_221.rst
@@ -0,0 +1,14 @@
+#############################
+Upgrading from 2.2.0 to 2.2.1
+#############################
+
+Before performing an update you should take your site offline by
+replacing the index.php file with a static one.
+
+Step 1: Update your CodeIgniter files
+=====================================
+
+Replace all files and directories in your "system" folder.
+
+.. note:: If you have any custom developed files in these folders please
+	make copies of them first.
\ No newline at end of file
diff --git a/user_guide_src/source/installation/upgrade_300.rst b/user_guide_src/source/installation/upgrade_300.rst
index 73cc473..497dc72 100644
--- a/user_guide_src/source/installation/upgrade_300.rst
+++ b/user_guide_src/source/installation/upgrade_300.rst
@@ -1,5 +1,5 @@
 #############################
-Upgrading from 2.2.0 to 3.0.0
+Upgrading from 2.2.1 to 3.0.0
 #############################
 
 .. note:: These upgrade notes are for a version that is yet to be released.
diff --git a/user_guide_src/source/installation/upgrading.rst b/user_guide_src/source/installation/upgrading.rst
index 5b98ea4..ab36e9b 100644
--- a/user_guide_src/source/installation/upgrading.rst
+++ b/user_guide_src/source/installation/upgrading.rst
@@ -8,7 +8,8 @@
 .. toctree::
 	:titlesonly:
 
-	Upgrading from 2.2.0 to 3.0.0 <upgrade_300>
+	Upgrading from 2.2.1 to 3.0.0 <upgrade_300>
+	Upgrading from 2.2.0 to 2.2.1 <upgrade_221>
 	Upgrading from 2.1.4 to 2.2.0 <upgrade_220>
 	Upgrading from 2.1.3 to 2.1.4 <upgrade_214>
 	Upgrading from 2.1.2 to 2.1.3 <upgrade_213>