diff --git a/README.rst b/README.rst
index 228e115..ee29f1b 100644
--- a/README.rst
+++ b/README.rst
@@ -13,6 +13,9 @@ persist-queue - A thread-safe, disk-based queue for Python
 .. image:: https://img.shields.io/pypi/v/persist-queue.svg
     :target: https://pypi.python.org/pypi/persist-queue
 
+.. image:: https://img.shields.io/pypi/pyversions/persist-queue
+   :alt: PyPI - Python Version
+
 ``persist-queue`` implements a file-based queue and a serial of sqlite3-based queues. The goals is to achieve following requirements:
 
 * Disk-based: each queued item should be stored in disk in case of any crash.
@@ -41,8 +44,8 @@ Join `persist-queue <https://join.slack
 
 Requirements
 ------------
-* Python 2.7 or Python 3.x (refer to `Deprecation`_ for future plan)
-* Full support for Linux, Windows and MacOS.
+* Python 3.5 or newer versions (refer to `Deprecation`_ for older Python versions)
+* Full support for Linux and MacOS.
 * Windows support (with `Caution`_ if ``persistqueue.Queue`` is used).
 
 Features
@@ -55,7 +58,7 @@ Features
 
 Deprecation
 -----------
-- `Python 2 was sunset on January 1, 2020 <https://www.python.org/doc/sunset-python-2/>`_, `persist-queue` will drop any Python 2 support in future version `1.0.0`, no new feature will be developed under Python 2.
+- `persist-queue` drops Python 2 support since version `1.0.0`, no new feature will be developed under Python 2 as `Python 2 was sunset on January 1, 2020 <https://www.python.org/doc/sunset-python-2/>`_.
 - `Python 3.4 release has reached end of life <https://www.python.org/downloads/release/python-3410/>`_ and
   `DBUtils <https://webwareforpython.github.io/DBUtils/changelog.html>`_ ceased support for `Python 3.4`, `persist queue` drops MySQL based queue for python 3.4 since version 0.8.0.
   other queue implementations such as file based queue and sqlite3 based queue are still workable.
diff --git a/scripts/publish.sh b/scripts/publish.sh
index 1b32e02..31d835d 100644
--- a/scripts/publish.sh
+++ b/scripts/publish.sh
@@ -8,7 +8,7 @@ if [[ "$NAME" != "persist-queue" ]];then
 fi
 rm -rf ./build/*.* ./dist/*.*
 python setup.py build sdist
-python setup.py build bdist_wheel
+python setup.py build bdist_wheel # requires `pip install wheel`
 twine check ${BASE_DIR}/dist/*.tar.gz
 twine check ${BASE_DIR}/dist/*.whl
 twine upload ${BASE_DIR}/dist/*
diff --git a/setup.cfg b/setup.cfg
index 2a9acf1..526aeb2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,2 +1,2 @@
 [bdist_wheel]
-universal = 1
+universal = 0
diff --git a/setup.py b/setup.py
index e391eec..24f84c4 100644
--- a/setup.py
+++ b/setup.py
@@ -35,7 +35,6 @@ def get_extras():
         'Programming Language :: Python',
         'Programming Language :: Python :: Implementation',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
diff --git a/tox.ini b/tox.ini
index 857d33a..7b3ef5b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,7 +3,7 @@
 minversion = 2.0
 skipsdist = True
 recreate = false
-envlist = py34, py35, py36, py37, py38, py39, py310, py311, py312, pep8, cover
+envlist = py35, py36, py37, py38, py39, py310, py311, py312, pep8, cover
 deps = -r{toxinidir}/test-requirements.txt
        -r{toxinidir}/extra-requirements.txt
        -r{toxinidir}/requirements.txt