diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ab1f37f..5d3f462 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -9,13 +9,16 @@ on:
       - v*
   pull_request:
 
+env:
+  UV_SYSTEM_PYTHON: 1
+
 jobs:
-  checkdeps:
+  test:
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
         os: [macOS-latest, ubuntu-latest, windows-latest]
 
     steps:
@@ -25,14 +28,48 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
+      - uses: astral-sh/setup-uv@v3
       - name: Install
         run: |
-          python -m pip install --upgrade pip
-          make setup
-          pip install -U .
+          uv pip install -e .[test]
       - name: Test
         run: make test
       - name: Lint
-        run: make lint
+        run: |
+          uv pip install -e .[test,dev]
+          make lint
+        if: ${{ matrix.python-version != '3.9' && matrix.python-version != '3.8'}}
       - name: Checkdeps
         run: make checkdeps
+
+  build:
+    needs: test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+      - uses: astral-sh/setup-uv@v3
+      - name: Install
+        run: uv pip install build
+      - name: Build
+        run: python -m build
+      - name: Upload
+        uses: actions/upload-artifact@v3
+        with:
+          name: sdist
+          path: dist
+
+  publish:
+    needs: build
+    runs-on: ubuntu-latest
+    if: startsWith(github.ref, 'refs/tags/v')
+    permissions:
+      id-token: write
+    steps:
+      - uses: actions/download-artifact@v3
+        with:
+          name: sdist
+          path: dist
+      - uses: pypa/gh-action-pypi-publish@release/v1
diff --git a/.gitignore b/.gitignore
index 0a4bafc..d6fda1d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -105,3 +105,9 @@ venv.bak/
 
 # Visual Studio Code
 .vscode/
+
+# Vim swapfiles
+*.sw[op]
+
+# Setuptools-scm
+_version.py
diff --git a/Makefile b/Makefile
index de808a0..6f78990 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,18 @@
 PYTHON?=python
 SOURCES=checkdeps setup.py
 
+UV:=$(shell uv --version)
+ifdef UV
+	VENV:=uv venv
+	PIP:=uv pip
+else
+	VENV:=python -m venv
+	PIP:=python -m pip
+endif
+
 .PHONY: venv
 venv:
-	$(PYTHON) -m venv .venv
+	$(VENV) .venv
 	source .venv/bin/activate && make setup
 	@echo 'run `source .venv/bin/activate` to use virtualenv'
 
@@ -12,7 +21,7 @@ venv:
 
 .PHONY: setup
 setup:
-	python -m pip install -Ue .[dev,test]
+	$(PIP) install -Ue .[dev,test]
 
 .PHONY: test
 test:
@@ -21,13 +30,15 @@ test:
 
 .PHONY: format
 format:
-	python -m ufmt format $(SOURCES)
+	ruff format
+	ruff check --fix
 
 .PHONY: lint
 lint:
-	python -m ufmt check $(SOURCES)
-	python -m flake8 $(SOURCES)
-	mypy --strict --install-types --non-interactive -p checkdeps
+	ruff check $(SOURCES)
+	python -m checkdeps --allow-names checkdeps,toml checkdeps
+	$(PIP) install types-toml
+	mypy --strict --non-interactive checkdeps
 
 .PHONY: release
 release:
diff --git a/README.md b/README.md
index c6d9253..14a8100 100644
--- a/README.md
+++ b/README.md
@@ -49,9 +49,18 @@ more self-contained.
 * Offer to add missing deps
 * Better handling of version-dependent deps in an `if` or `try`/`except`
 
+# Version Compat
+
+Usage of this library should work back to 3.8, but development (and mypy
+compatibility) only on 3.10-3.12.  Linting requires 3.12 for full fidelity.
+
+# Versioning
+
+This library follows [meanver](https://meanver.org/) which basically means
+[semver](https://semver.org/) along with a promise to rename when the major
+version changes.
+
 # License
 
 checkdeps is copyright [Tim Hatch](https://timhatch.com/), and licensed under
-the MIT license.  I am providing code in this repository to you under an open
-source license.  This is my personal repository; the license you receive to
-my code is from me and not from my employer. See the `LICENSE` file for details.
+the MIT license.  See the `LICENSE` file for details.
diff --git a/checkdeps/__init__.py b/checkdeps/__init__.py
index e69de29..9976658 100644
--- a/checkdeps/__init__.py
+++ b/checkdeps/__init__.py
@@ -0,0 +1,4 @@
+try:
+    from ._version import __version__
+except ImportError:  # pragma: no cover
+    __version__ = "dev"
diff --git a/setup.cfg b/setup.cfg
index ee76a31..0e26097 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -10,10 +10,10 @@ author_email = tim@timhatch.com
 
 [options]
 packages = find:
+python_requires = >=3.8
 setup_requires =
     setuptools_scm >= 8
     setuptools >= 65
-python_requires = >=3.10
 include_package_data = true
 install_requires =
     click>=7.0
@@ -24,15 +24,11 @@ install_requires =
 
 [options.extras_require]
 dev =
-    black == 23.12.1
-    # checkdeps == 0.0.2
-    flake8 == 7.0.0
-    mypy == 1.8.0
-    tox == 4.12.1
-    twine == 4.0.2
-    ufmt == 2.3.0
-    usort == 1.0.7
-    wheel == 0.42.0
+    ruff == 0.8.0
+    checkdeps == 0.9.0
+    mypy == 1.13.0
+    tox == 4.23.2
+
 test =
     coverage >= 6
 
@@ -59,7 +55,7 @@ skip_covered = True
 ignore_missing_imports = True
 
 [tox:tox]
-envlist = py{310,311,312}, coverage
+envlist = py{38,39,310,311,312,313}, coverage
 
 [testenv]
 deps = .[test]
@@ -77,8 +73,5 @@ commands =
     coverage combine
     coverage report
 depends =
-    py{310,311,312}
+    py{38,39,310,311,312,313}
 
-[flake8]
-ignore = E203, E231, E266, E302, E501, W503
-max-line-length = 88
diff --git a/setup.py b/setup.py
index d5d43d7..e9f8f46 100644
--- a/setup.py
+++ b/setup.py
@@ -1,3 +1,3 @@
 from setuptools import setup
 
-setup(use_scm_version=True)
+setup(use_scm_version={"write_to": "checkdeps/_version.py"})