diff --git a/pyproject.toml b/pyproject.toml
index 655ccec..ff123e0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "annotated-doc"
-version = "0.0.3"
+dynamic = ["version"]
 license = "MIT"
 license-files = ["LICENSE"]
 description = "Document parameters, class attributes, return types, and variables inline, with Annotated."
@@ -23,7 +23,6 @@ classifiers = [
     "Typing :: Typed",
     "Development Status :: 4 - Beta",
     "Intended Audience :: Developers",
-    "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3 :: Only",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
@@ -42,8 +41,8 @@ Issues = "https://github.com/fastapi/annotated-doc/issues"
 Changelog = "https://github.com/fastapi/annotated-doc/release-notes.md"
 
 [build-system]
-requires = ["uv_build>=0.9.1,<0.10.0"]
-build-backend = "uv_build"
+requires = ["pdm-backend"]
+build-backend = "pdm.backend"
 
 [tool.mypy]
 strict = true
@@ -95,9 +94,13 @@ ignore = [
 # Preserve types, even if a file imports `from __future__ import annotations`.
 keep-runtime-typing = true
 
-[tool.uv.build-backend]
-source-include = [
-    "tests/**",
+[tool.pdm]
+version = { source = "file", path = "src/annotated_doc/__init__.py" }
+distribution = true
+
+[tool.pdm.build]
+source-includes = [
+    "tests/",
     "requirements*.txt",
-    "scripts/**",
-]
+    "scripts/",
+    ]
diff --git a/src/annotated_doc/__init__.py b/src/annotated_doc/__init__.py
index 2b27488..472440a 100644
--- a/src/annotated_doc/__init__.py
+++ b/src/annotated_doc/__init__.py
@@ -1,5 +1,3 @@
-from importlib.metadata import version
-
 from .main import Doc as Doc
 
-__version__ = version("annotated-doc")
+__version__ = "0.0.3"