diff --git a/.gitignore b/.gitignore
index 1fec208..ac6c529 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,3 +23,6 @@ venv
 
 # pytest
 .pytest_cache
+
+venv
+env
\ No newline at end of file
diff --git a/README.rst b/README.rst
index dfa52c1..d523e25 100644
--- a/README.rst
+++ b/README.rst
@@ -473,7 +473,11 @@ Submit an issue/PR on this project. Please do not send me emails, as then the co
 Contributing
 ------------
 
-To setup the development environment, simply do ``pip install -r requirements_dev.txt``
+To setup the development environment:
+  - create virtual environment with `python3 -m venv env`
+  - activate virtual environment with `source env/bin/activate` or `.\env\Scripts\activate.ps1` for Windows' Powershell  
+  - run ``pip install -r requirements_dev.txt``
+
 To manually run the pre-commit hook, run `pre-commit run --all-files`.
 
 Because there's possibility to use swapped models therefore tests contains two config files:
@@ -489,3 +493,9 @@ To run tests locally you could use ``pytest``, and if you need to check migratio
     export DJANGO_SETTINGS_MODULE=tests.settings.default 
     # or export DJANGO_SETTINGS_MODULE=tests.settings.swap
     pytest
+
+Packaging for PyPi
+
+- run `rm -rf dist/`
+- run `python3 setup.py sdist`
+- run `twine upload dist/*`
\ No newline at end of file
diff --git a/fcm_django/__init__.py b/fcm_django/__init__.py
index 2cb8bb2..dd82218 100644
--- a/fcm_django/__init__.py
+++ b/fcm_django/__init__.py
@@ -1,6 +1,6 @@
 __author__ = "xTrinch"
 __email__ = "mojca.rojko@gmail.com"
-__version__ = "2.1.0"
+__version__ = "2.2.1"
 
 
 class NotificationError(Exception):
diff --git a/requirements_dev.txt b/requirements_dev.txt
index a5aa8f4..39cbad1 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -5,3 +5,4 @@ isort==5.12.0
 pre-commit>=2.0.0
 pytest-watcher>=0.3.1
 tox>=4.5.2
+setuptools>=71.1.0
\ No newline at end of file