diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 4afc5d1..e417167 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -14,13 +14,23 @@ Please follow these guidelines to ensure a smooth contribution process.
 We recommend using a virtual environment to manage dependencies. You can use `venv`, `conda`, or any other tool of your choice.
 
 1. Fork/Clone the repository on GitHub
+
 ```bash
-git clone <your-fork-url>
-cd mediafile
+$ git clone <your-fork-url>
+$ cd mediafile
 ```
-2. Install dependencies and set up the development environment
+
+2. Set up your development environment
+
+```bash
+$ python -m pip install --user pipx
+$ pipx install poetry poethepoet
+```
+
+3. Install project dependencies
+
 ```bash
-pip install -e '.[dev]'
+$ poetry install
 ```
 
 ## Before submitting a Pull Request
@@ -29,7 +39,7 @@ Verify that your code adheres to the project standards and conventions. Run
 ruff and pytest to ensure your code is properly formatted and all tests pass.
 
 ```bash
-ruff check .
-ruff format .
-pytest .
+$ poe lint
+$ poe format
+$ poe test
 ```
diff --git a/README.rst b/README.rst
index d86d033..356e176 100644
--- a/README.rst
+++ b/README.rst
@@ -18,7 +18,7 @@ Synopsis
 --------
 
 MediaFile is available `on PyPI`_. Install it by typing ``pip install
-mediafile``. It works on Python 3.7 or later. Then:
+mediafile``. It works on Python 3.9 or later. Then:
 
 .. code-block:: python
 
diff --git a/docs/changelog.rst b/docs/changelog.rst
index b4754f5..d6057da 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -4,12 +4,16 @@ Changelog
 Upcoming
 --------
 
+v1.0.0
+------
+
 - Dropped support for Python 3.7 and 3.8
 - Added minimal contribution guidelines to CONTRIBUTING.md
 - Changed project linter and formatter from ``flake8`` to ``ruff``. Reformatted
   the codebase with ``ruff``.
 - Moved changelog into its own file, ``changelog.rst``. Also added github
   workflow for automatic changelog reminders.
+- Modernized package and tests setup to use ``poetry``.
 
 v0.13.0
 -------
diff --git a/pyproject.toml b/pyproject.toml
index 8f2a907..13186fe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "mediafile"
-version = "1.0.0-rc1"
+version = "0.13.0"
 description = "A simple, cross-format library for reading and writing media file metadata."
 authors = [{ name = "Adrian Sampson", email = "adrian@radbox.org" }]
 readme = "README.rst"