diff --git a/README.md b/README.md
index f79f713..bf96812 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ The project wraps the [md2txt](https://github.com/randogoth/md2txt/) toolchain,
 
 ### Installation
 
-Install the CLI directly from GitHub with [uv](https://github.com/astral-sh/uv): 
+Install the CLI directly from GitHub with [uv](https://github.com/astral-sh/uv):
 
 ```
 uv tool install --from github:randogoth/mambler mambler
@@ -23,7 +23,7 @@ uv tool install --from github:randogoth/mambler mambler
 ### Usage
 
 ```bash
-uv run mambler.py --title "Your Book Title" --codepage 437 path/to/index.md output.amb
+mambler --title "Your Book Title" --codepage 437 path/to/index.md output.amb
 ```
 
 - `index.md` is the root Markdown file. Any local Markdown links it contains will be followed and bundled automatically.
@@ -35,7 +35,7 @@ uv run mambler.py --title "Your Book Title" --codepage 437 path/to/index.md outp
 
 ### Development Notes
 
-- Run `uv run python -m compileall mambler.py` to ensure the script still compiles.
+- Run `uv run python -m compileall src/mambler` to ensure the package still compiles.
 - The `md2txt` dependency is fetched from GitHub; contribute renderer/parser changes upstream in that project.
 
 ---
diff --git a/pyproject.toml b/pyproject.toml
index 4e3ed50..2272522 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,7 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
 [project]
 name = "mambler"
 version = "0.1.0"
@@ -7,6 +11,17 @@ requires-python = ">=3.13"
 dependencies = [
     "md2txt",
 ]
+license = { file = "LICENSE" }
+authors = [{ name = "Tobias Raayoni Last" }]
+
+[project.scripts]
+mambler = "mambler:main"
 
 [tool.uv.sources]
 md2txt = { git = "https://github.com/randogoth/md2txt", rev = "master" }
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/mambler"]
+
+[tool.hatch.build.targets.sdist]
+include = ["src/mambler", "README.md", "LICENSE"]
diff --git a/mambler.py b/src/mambler/__init__.py
similarity index 99%
rename from mambler.py
rename to src/mambler/__init__.py
index cbc4323..c2c2425 100644
--- a/mambler.py
+++ b/src/mambler/__init__.py
@@ -1,4 +1,5 @@
-#!/usr/bin/env python3
+"""Core package for converting Markdown to Ancient Machine Book archives."""
+
 from __future__ import annotations
 
 import argparse
diff --git a/src/mambler/__main__.py b/src/mambler/__main__.py
new file mode 100644
index 0000000..fdd5a30
--- /dev/null
+++ b/src/mambler/__main__.py
@@ -0,0 +1,10 @@
+from . import main
+
+
+def run() -> int:
+    """Entry point for `python -m mambler`."""
+    return main()
+
+
+if __name__ == "__main__":
+    raise SystemExit(run())