diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..4d39fa3
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,35 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "tsmark"
+dynamic = ["version"]
+description = 'Video timestamp marking.'
+requires-python = ">=3.8"
+license = "MIT"
+keywords = []
+authors = [
+  { name = "Q", email = "q@six9.net" },
+]
+classifiers = [
+  "Development Status :: 4 - Beta",
+  "Programming Language :: Python",
+  "Programming Language :: Python :: 3.8",
+  "Programming Language :: Python :: 3.9",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: Implementation :: CPython",
+  "Programming Language :: Python :: Implementation :: PyPy",
+]
+dependencies = ["opencv-python>=4.5.0"]
+
+[project.scripts]
+tsmark = "tsmark:main"
+
+[tool.hatch.version]
+path = "tsmark/__init__.py"
+
+[tool.hatch.build.targets.wheel]
+packages = ["tsmark"]