diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..79d83f9
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,54 @@
+[build-system]
+requires = ["setuptools>=61.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "termdiagram"
+version = "0.1.0"
+description = "A CLI tool for generating architecture diagrams from codebases"
+readme = "README.md"
+requires-python = ">=3.10"
+license = {text = "MIT"}
+authors = [
+    {name = "TermDiagram Contributors"}
+]
+keywords = ["cli", "diagram", "architecture", "visualization", "terminal"]
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+]
+dependencies = [
+    "click>=8.0",
+    "rich>=13.0",
+    "tree-sitter-languages>=1.0",
+    "gitpython>=3.0",
+    "rapidfuzz>=3.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=7.0",
+    "pytest-cov>=4.0",
+    "ruff>=0.1.0",
+    "mypy>=1.7.0",
+    "pre-commit>=3.0",
+]
+
+[project.scripts]
+termdiagram = "termdiagram.cli:main"
+
+[tool.ruff]
+target-version = "py310"
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "UP", "W"]
+ignore = []
+
+[tool.mypy]
+python_version = "3.10"
+strict = true