diff --git a/LICENSE b/LICENSE
index 3da73b5..d911e3c 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-MIT License Copyright (c) 2020 Faerbit
+MIT License Copyright (c) 2020 - 2021 Faerbit
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index 32eac8c..92e60d0 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,21 @@
 
 Simple time tracking app written with Python and Qt5
 
-Some JIRA integration is available.
+Some Jira integration is built in.
+
+## Installation, Qt versions and You
+Fime supports using both Qt 5 and Qt 6 via their respective PySide packages.
+
+On Linux I recommend installing the PySide package provided by the distribution.
+Install `PySide2` for Qt 5 or `PySide6` for Qt 6.
+
+Run `pip install --user fime` in that case.
+
+On other OSes or if you decide not to follow my recommendation run either
+ * `pip install --user fime[qt5]` or
+ * `pip install --user fime[qt6]`
+
+Note that it both versions of PySide are installed Qt 6 will be preferred.
 
 ## Config file
 
diff --git a/setup.cfg b/setup.cfg
index fd965f2..f97f464 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -5,6 +5,7 @@ author_email = faerbit@posteo.net
 description = Simple time tracking app written with Python and Qt5
 long_description = file: README.md
 long_description_content_type = text/markdown
+license = MIT License
 url = https://git.faerb.it/faerbit/fime
 classifiers =
     Programming Language :: Python :: 3
@@ -12,6 +13,7 @@ classifiers =
     Operating System :: OS Independent
 
 [options]
+zip_safe = True
 package_dir =
     = src
 packages = find:
@@ -19,11 +21,14 @@ python_requires = >=3.8
 install_requires =
     requests
     requests-futures
-    PySide2
 
 [options.packages.find]
 where = src
 
+[options.extras_require]
+qt5 = PySide2
+qt6 = PySide6
+
 [options.entry_points]
 gui_scripts =
     fime = fime.main:main