diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..567994c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+__pycache__
+*.egg-info/
diff --git a/.python-version b/.python-version
new file mode 100644
index 0000000..6324d40
--- /dev/null
+++ b/.python-version
@@ -0,0 +1 @@
+3.14
diff --git a/git-annex-duplicates b/main.py
old mode 100755
new mode 100644
similarity index 92%
rename from git-annex-duplicates
rename to main.py
index 3d44545..60ac314
--- a/git-annex-duplicates
+++ b/main.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 import subprocess
 import collections
 import re
@@ -30,7 +29,3 @@ def main(exclude, arguments):
             for f in files[k]:
                 print(f)
             print()
-
-
-if __name__ == "__main__":
-    main()
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..9b04be0
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,15 @@
+[project]
+name = "git-annex-duplicates"
+version = "0.1.0"
+description = "Add your description here"
+readme = "README.md"
+requires-python = ">=3.11"
+dependencies = [
+    "click>=8.5.0",
+]
+
+[tool.uv]
+package = true
+
+[project.scripts]
+git-annex-duplicates = "main:main"
diff --git a/uv.lock b/uv.lock
new file mode 100644
index 0000000..a58304f
--- /dev/null
+++ b/uv.lock
@@ -0,0 +1,23 @@
+version = 1
+revision = 3
+requires-python = ">=3.11"
+
+[[package]]
+name = "click"
+version = "8.5.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/c7/0e/7fa0ef50764b67090eca4114772a2abf8b6148198475e54c660b97caeee6/click-8.5.0.tar.gz", hash = "sha256:ba0d2089de75ea0310e2dde03160e6ca10009947fb95a182f9b54021bb272e34", size = 382235, upload-time = "2026-08-26T13:33:14.56Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/58/50/6c0d534c5f134586a8e1ba4e330569e32f057e33372ae556463212fb4cd3/click-8.5.0-py3-none-any.whl", hash = "sha256:255bc9599cf7748b4b1a446ccc735421bd08a2ae529a8b88597d3de5664ee360", size = 125251, upload-time = "2026-08-26T13:33:12.928Z" },
+]
+
+[[package]]
+name = "git-annex-duplicates"
+version = "0.1.0"
+source = { editable = "." }
+dependencies = [
+    { name = "click" },
+]
+
+[package.metadata]
+requires-dist = [{ name = "click", specifier = ">=8.5.0" }]