diff --git a/poetry.lock b/poetry.lock
deleted file mode 100644
index fe6abe8..0000000
--- a/poetry.lock
+++ /dev/null
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-[package.extras]
-docs = ["furo", "jaraco.packaging (>=9)", "jaraco.tidelift (>=1.4)", "rst.linker (>=1.9)", "sphinx (>=3.5)"]
-testing = ["flake8 (<5)", "func-timeout", "jaraco.functools", "jaraco.itertools", "more-itertools", "pytest (>=6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.3)", "pytest-flake8", "pytest-mypy (>=0.9.1)"]
-
-[metadata]
-lock-version = "2.0"
-python-versions = ">=3.7.1"
-content-hash = "a4e08a49bb77d48c69ad32760d590c0b73bd156b4ad60b8e183343259cd351a9"
diff --git a/pyproject.toml b/pyproject.toml
index 018e514..b1aa6b5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,19 +1,25 @@
-[tool.poetry]
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
 name = "exfor-parserpy"
 version = "0.1.0"
 description = "This parser reads the EXFOR format into a nested dictionary structure in Python."
-authors = ["Georg Schnabel <g.schnabel@iaea.org>"]
 license = "MIT"
+keywords = []
+readme = "README.md"
+authors = [
+  { name = "Georg Schnabel", email = "g.schnabel@iaea.org" },
+]
+requires-python = ">=3.8"
+dependencies = [
+  "numpy>=1.22.0",
+  "pandas>=1.0.0",
+]
 
-[tool.poetry.dependencies]
-python = ">=3.7.1"
-numpy = ">=1.15.0"
-pandas = ">=1.0.0"
-
-[tool.poetry.dev-dependencies]
-pytest = ">=4.0"
-pre-commit = ">=1.10.0"
-
-[build-system]
-requires = ["poetry-core>=1.0.0"]
-build-backend = "poetry.core.masonry.api"
+[project.optional-dependencies]
+dev = [
+  "pytest>=4.0",
+  "pre-commit>=1.10.0",
+]