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diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
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+++ b/user_guide_src/source/changelog.rst
@@ -21,6 +21,28 @@ Version 3.0.4
Release Date: Not Released
+- General Changes
+
+ - Updated :doc:`Security Library <libraries/security>` method ``get_random_bytes()`` to use PHP7's ``random_bytes()`` function when possible.
+ - Updated :doc:`Encryption Library <libraries/security>` method ``create_key()`` to use PHP7's ``random_bytes()`` function when possible.
+
+Bug fixes for 3.0.4
+-------------------
+
+- Fixed a bug (#4212) - :doc:`Query Builder <database/query_builder>` method ``count_all_results()`` could fail if an ``ORDER BY`` condition is used.
+- Fixed a bug where :doc:`Form Helper <helpers/form_helper>` functions :php:func:`set_checkbox()`, :php:func:`set_radio()` didn't "uncheck" inputs on a submitted form if the default state is "checked".
+- Fixed a bug (#4217) - :doc:`Config Library <libraries/config>` method ``base_url()`` didn't use proper formatting for IPv6 when it falls back to ``$_SERVER['SERVER_ADDR']``.
+- Fixed a bug where :doc:`CAPTCHA Helper <helpers/captcha_helper>` entered an infinite loop while generating a random string.
+- Fixed a bug (#4223) - :doc:`Database <database/method>` method ``simple_query()`` blindly executes queries without checking if the connection was initialized properly.
+- Fixed a bug (#4244) - :doc:`Email Library <libraries/email>` could improperly use "unsafe" US-ASCII characters during Quoted-printable encoding.
+- Fixed a bug (#4245) - :doc:`Database Forge <database/forge>` couldn't properly handle ``SET`` and ``ENUM`` type fields with string values.
+- Fixed a bug (#4283) - :doc:`String Helper <helpers/string_helper>` function :php:func:`alternator()` couldn't be called without arguments.
+- Fixed a bug (#4306) - :doc:`Database <database/index>` method ``version()`` didn't work properly with the 'mssql' driver.
+- Fixed a bug (#4039) - :doc:`Session Library <libraries/sessions>` could generate multiple (redundant) warnings in case of a read failure with the 'files' driver, due to a bug in PHP.
+- Fixed a bug where :doc:`Session Library <libraries/sessions>` didn't have proper error handling on PHP 5 (due to a PHP bug).
+- Fixed a bug (#4312) - :doc:`Form Validation Library <libraries/form_validation>` didn't provide error feedback for failed validation on empty requests.
+- Fixed a bug where :doc:`Database <database/index>` method `version()` returned banner text instead of only the version number with the 'oci8' and 'pdo/oci' drivers.
+
Version 3.0.3
=============