diff --git a/poetry.lock b/poetry.lock
deleted file mode 100644
index 193eda8..0000000
--- a/poetry.lock
+++ /dev/null
@@ -1,18 +0,0 @@
-# This file is automatically @generated by Poetry 2.0.0 and should not be changed by hand.
-
-[[package]]
-name = "superturtle"
-version = "0.2.0"
-description = "Extensions to Python's turtle"
-optional = false
-python-versions = "<4.0,>=3.9"
-groups = ["main"]
-files = [
-    {file = "superturtle-0.2.0-py3-none-any.whl", hash = "sha256:ca3a31be3259387b4490846adbf64502acc9d23472912cc43497ab170e89f506"},
-    {file = "superturtle-0.2.0.tar.gz", hash = "sha256:807fb419c1dba9cb809a22a68e72c0193bdeed4a9326eb36ad940b2a7ff6ac04"},
-]
-
-[metadata]
-lock-version = "2.1"
-python-versions = ">=3.10,<4.0"
-content-hash = "6aad436bbbf760fa856344262eab22d62a167cac4e5dfefbf4be77d5a37428c9"
diff --git a/pyproject.toml b/pyproject.toml
index 39080b7..9a4f3db 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,21 +1,16 @@
 [project]
 name = "problemset-typeface"
-version = "0.1.0"
+version = "5.0.0"
 description = ""
-authors = [
-    {name = "Chris Proctor",email = "chris@chrisproctor.net"}
-]
-license = {text = "MIT"}
-readme = "README.md"
+authors = [{ name = "Chris Proctor", email = "chris@chrisproctor.net" }]
 requires-python = ">=3.10,<4.0"
-dependencies = [
-    "superturtle (>=0.2.0,<0.3.0)"
-]
-
+readme = "README.md"
+license = { text = "MIT" }
+dependencies = ["superturtle (>=0.2.0,<0.3.0)"]
 
 [build-system]
-requires = ["poetry-core>=2.0.0,<3.0.0"]
-build-backend = "poetry.core.masonry.api"
+requires = ["hatchling"]
+build-backend = "hatchling.build"
 
-[tool.poetry]
-package-mode = false
+[tool.uv]
+package = false
diff --git a/uv.lock b/uv.lock
new file mode 100644
index 0000000..defec67
--- /dev/null
+++ b/uv.lock
@@ -0,0 +1,22 @@
+version = 1
+requires-python = ">=3.10, <4.0"
+
+[[package]]
+name = "problemset-typeface"
+version = "5.0.0"
+source = { virtual = "." }
+dependencies = [
+    { name = "superturtle" },
+]
+
+[package.metadata]
+requires-dist = [{ name = "superturtle", specifier = ">=0.2.0,<0.3.0" }]
+
+[[package]]
+name = "superturtle"
+version = "0.2.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/6a/92/126ebdb094cce3d058746c99148acb2fb3a132998d69f2945f344e837d04/superturtle-0.2.0.tar.gz", hash = "sha256:807fb419c1dba9cb809a22a68e72c0193bdeed4a9326eb36ad940b2a7ff6ac04", size = 9611 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/bf/a6/221c4dab508d0f2c9c80fe89cc16b4b1df8be98a7458d48cf298f1d993ba/superturtle-0.2.0-py3-none-any.whl", hash = "sha256:ca3a31be3259387b4490846adbf64502acc9d23472912cc43497ab170e89f506", size = 11177 },
+]