diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 4623678..db3a135 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,16 @@
 Changelog
 =========
 
+Version 0.4.0
+-------------
+
+Released 2022-06-10
+
+- Rename ``canMinimizeToTray`` to ``can_minimize_to_tray``
+- Remove support for Python versions less than 3.8
+- Move to hatch for package management
+- Update README
+
 Version 0.3
 -----------
 
diff --git a/README.rst b/README.rst
index 5546b57..bc4de1b 100644
--- a/README.rst
+++ b/README.rst
@@ -1,8 +1,8 @@
 WebAppify
 =========
 
-WebAppify is a simple module to easily create your own desktop apps of websites. WebAppify uses PyQt5 and QtWebKit or
-QtWebEngine for displaying the web page, and works on Python 2.7 and Python 3.4 and up.
+WebAppify is a simple module to easily create your own desktop apps of websites. WebAppify uses PyQt5 and QtWebEngine
+for displaying the web page, and works on Python 3.8 and up.
 
 To create your own desktop web app, import and set up the WebApp class.
 
@@ -15,19 +15,27 @@ To create your own desktop web app, import and set up the WebApp class.
 
 This will create a window with the website, using the icon provided.
 
-Additional Options
-------------------
-
-Version 0.2 comes with the option of minimizing to the system tray. Simply pass ``canMinimizeToTray=True`` to the class
-and a tray icon will be installed with the necessary menu options.
-
-.. code:: python
-
-   app = WebApp('OpenStreetMap', 'https://www.openstreetmap.org', 'osm.png', canMinimizeToTray=True)
-   
-Clicking on the tray icon will show the window, while right-clicking will show the menu.
-
 .. note::
 
    If your site needs Flash Player, you'll need the appropriate Flash Player plugin installed system-wide. For QtWebKit
    you will need the NPAPI plugin, and for QtWebEngine you will need the PPAPI plugin.
+
+Additional Options
+------------------
+
+``can_minimize_to_tray``
+''''''''''''''''''''''''
+
+.. important::
+
+   This option was changed in version 0.4.0 from ``canMinimizeToTray`` to ``can_minimize_to_tray``. The old option
+   is still available, but is deprecated. It will be removed in 0.5.0.
+
+To install a system tray icon, and minimize your application to the system tray, simply pass
+``can_minimize_to_tray=True`` to the class and a tray icon will be installed with the necessary menu options.
+
+.. code:: python
+
+   app = WebApp('OpenStreetMap', 'https://www.openstreetmap.org', 'osm.png', can_minimize_to_tray=True)
+   
+Clicking on the tray icon will show the window, while right-clicking will show the menu.