diff --git a/DEVELOPING.md b/DEVELOPING.md
index 04906337..3d28d3ec 100644
--- a/DEVELOPING.md
+++ b/DEVELOPING.md
@@ -26,7 +26,7 @@ uv add <somepackage> --optional <somegroup>
 
 ## Creating Distributions
 
-1. Bump the version in [version.py](./wfdb/version.py).
+1. Bump the version in [pyproject.toml](./pyproject.toml).
 
 2. Add a summary of the changes to [the changelog](https://github.com/MIT-LCP/wfdb-python/blob/main/docs/changes.rst). You may also need to update [the documentation](https://github.com/MIT-LCP/wfdb-python/tree/main/docs). For example, if function arguments have been updated, this change will need to be captured. Open a pull request to merge these changes to the main branch.
 
diff --git a/docs/changes.rst b/docs/changes.rst
index c1003495..a21d7c50 100644
--- a/docs/changes.rst
+++ b/docs/changes.rst
@@ -14,6 +14,9 @@ Unreleased
 **Raise minimum versions of dependencies**
   The minimum versions of ``soundfile`` (0.12.1), ``matplotlib`` (3.8.0) and ``requests`` (2.31.0) have been raised. The minimum versions of the other dependencies are unchanged.
 
+**Build with uv_build**
+  The package is now built with ``uv_build`` instead of ``hatchling``. The version number is specified in ``pyproject.toml`` only, and ``wfdb.__version__`` is read from the installed package metadata (it is ``"unknown"`` if the package is run from a source tree without being installed).
+
 Version 4.3.1 (Feb 2026)
 -----------------------------
 
diff --git a/docs/conf.py b/docs/conf.py
index 86ca68f0..d1907b87 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -19,6 +19,7 @@
 #
 import os
 import sys
+import tomllib
 
 sys.path.insert(0, os.path.abspath(".."))
 
@@ -66,8 +67,8 @@ def __getattr__(cls, name):
 copyright = "2018, MIT Lab for Computational Physiology"
 author = "MIT Lab for Computational Physiology"
 
-with open("../wfdb/version.py") as f:
-    __version__ = f.read().split()[-1].strip("'")
+with open("../pyproject.toml", "rb") as f:
+    __version__ = tomllib.load(f)["project"]["version"]
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
diff --git a/pyproject.toml b/pyproject.toml
index 43b24914..0c92b787 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,12 +1,14 @@
 [build-system]
-requires = ["hatchling"]
-build-backend = "hatchling.build"
+requires = ["uv_build >= 0.13.0, < 0.14"]
+build-backend = "uv_build"
 
 [project]
 name = "wfdb"
+version = "4.3.1"
 description = "The WFDB Python package: tools for reading, writing, and processing physiologic signals and annotations."
 authors = [{name = "The Laboratory for Computational Physiology", email = "contact@physionet.org"}]
-license = {text = "MIT License"}
+license = "MIT"
+license-files = ["LICENSE"]
 readme = "README.md"
 requires-python = ">= 3.11"
 dependencies = [
@@ -19,7 +21,6 @@ dependencies = [
     "fsspec >= 2023.10.0",
     "aiohttp >= 3.10.11",
 ]
-dynamic = ["version"]
 
 [project.optional-dependencies]
 dev = [
@@ -39,13 +40,5 @@ documentation = "https://wfdb.readthedocs.io/"
 line-length = 80
 target-version = ["py311"]
 
-[tool.hatch.build.targets.sdist]
-exclude = [
-    "/tests",
-    "/sample-data",
-    "/demo-img.png",
-    "/demo.ipynb",
-]
-
-[tool.hatch.version]
-path = "wfdb/version.py"
+[tool.uv.build-backend]
+module-root = ""
diff --git a/wfdb/version.py b/wfdb/version.py
index ed48cdab..c026e9f0 100644
--- a/wfdb/version.py
+++ b/wfdb/version.py
@@ -1 +1,7 @@
-__version__ = "4.3.1"
+from importlib.metadata import PackageNotFoundError, version
+
+try:
+    __version__ = version("wfdb")
+except PackageNotFoundError:
+    # Running from a source tree that has not been installed
+    __version__ = "unknown"