diff --git a/.github/workflows/unittest.yml b/.github/workflows/unittest.yml
index d42014b..0f00d23 100644
--- a/.github/workflows/unittest.yml
+++ b/.github/workflows/unittest.yml
@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [macos-latest, windows-latest, ubuntu-20.04, ubuntu-22.04]
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13-dev"]
     name: unittest - Python ${{ matrix.python-version }} ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/CHANGELOG.md b/CHANGELOG.md
deleted file mode 100644
index 712df3f..0000000
--- a/CHANGELOG.md
+++ /dev/null
@@ -1,47 +0,0 @@
-# Changes
-
-## 1.4.2
-
-- add ability to override settings in $PWD/.cmakelintrc, ideally placing it in the project root folder.
-
-## 1.4.1
-
-- Add missing error package/stdargs category
-- NOBUG: code linted
-
-## 1.4
-
-- Add --quiet flag to suppress "Total Errors: 0"
-- Add --linelength=N flag to allow longer default lines (default remains 80)
-
-## 1.3.4
-
-- fix false positives in indented blocks
-
-## 1.3.3
-
-- fix crash on invalid `# lint_cmake: pragma` line
-- fix deprecation warning with Python 3.4
-- fix false positive warnings related to non-CMake quoted chunks (Issue #2)
-
-## 1.3.2
-
-- return error code 0, 1, 32 on error
-
-## 1.3.1
-
-- fix version number
-
-## 1.3
-
-- individual CMake files can control filters with `# lint_cmake: pragma` comment
-- improved `SetFilters` function to allow spaces around the commas
-- use `${XDG_CONFIG_HOME}` for the cmakelintrc file, with backwards compatible check for `~/.cmakelintrc`
-
-## 1.2.01
-
-- Published on pypi
-
-## 1.2
-
-- Moved to github
diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
deleted file mode 100644
index c6e2df7..0000000
--- a/CONTRIBUTING.rst
+++ /dev/null
@@ -1,65 +0,0 @@
-Contributing guide
-==================
-
-Thanks for your interest in contributing to cmakelint.
-
-Any kinds of contributions are welcome: Bug reports, Documentation, Patches.
-
-Development
------------
-
-For many tasks, it is okay to just develop using a single installed python version. But if you need to test/debug the project in multiple python versions, you need to install those version:
-
-1. (Optional) Install multiple python versions 
-   1. (Optional) Install [pyenv](https://github.com/pyenv/pyenv-installer) to manage python versions
-   2. (Optional) Using pyenv, install the python versions used in testing
-
-      pyenv install 2.7.16
-      pyenv install 3.6.8
-      # ...
-      pyenv local 2.7.16 3.6.8 ...
-
-It may be okay to run and test python against locally installed libraries, but if you need to have a consistent build, it is recommended to manage your environment using virtualenv: [virtualenv](https://virtualenv.pypa.io/en/latest/ ), [virtualenv](https://pypi.org/project/virtualenvwrapper/ )
-
-1. (Optional) Setup a local virtual environment with all necessary tools and libraries
-     mkvirtualenv cmakelint
-     pip install .[dev]
-      
-You can setup your local environment for developing patches for cmakelint like this:
-
-.. code-block:: bash
-
-    # install cmakelint locally to run against projects
-    pip install --user -e .[dev]
-
-    # run tests
-    python setup.py test  # or pytest
-    python setup.py lint  # or coala
-    ./tox    # the above in all python environments
-
-Releasing
----------
-
-To release a new version:
-
-.. code-block:: bash
-
-    # prepare files for release
-    git checkout develop
-    vi cmakelint/__version__py # increment the version
-    vi CHANGELOG.md # log changes
-    git add cmakelint/__version__py CHANGELOG.md
-    git commit -m "Releasing x.y.z"
-    # test-release (on env by mkvirtualenv -p /usr/bin/python3)
-    pip install --upgrade setuptools wheel twine
-    rm -rf dist
-    python3 setup.py sdist bdist_wheel
-    twine upload --repository testpypi dist/*
-    # ... Check website and downloads from https://test.pypi.org/project/cmakelint/
-    # Actual release
-    git checkout master
-    git merge develop
-    python3 setup.py sdist bdist_wheel
-    twine upload dist/*
-    git tag x.y.z
-    git push origin master develop --tags
diff --git a/justfile b/justfile
index 9882761..97b9922 100644
--- a/justfile
+++ b/justfile
@@ -8,6 +8,7 @@ create-venv:
   {{SYSTEM_PYTHON}} -m venv .venv
 
 install:
+  {{PYTHON}} -m pip install -U pip
   {{PYTHON}} -m pip install -e ".[dev]"
 
 run *ARGS: