diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 22b0a97..20adb54 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -14,14 +14,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.6, 3.7, 3.8]
+        python-version: ["3.11", "3.12"]
         os: [macOS-latest, ubuntu-latest, windows-latest]
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v1
+        uses: actions/checkout@v4
       - name: Set Up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install
diff --git a/.mailmap b/.mailmap
new file mode 100644
index 0000000..389f6c5
--- /dev/null
+++ b/.mailmap
@@ -0,0 +1 @@
+Amethyst Reese <amy@n7.gg> <john@noswap.com>
diff --git a/LICENSE b/LICENSE
index c5498ec..823aad7 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2020 John Reese
+Copyright (c) 2020-2024 Amethyst Reese
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/Makefile b/Makefile
index 03b426f..9731222 100644
--- a/Makefile
+++ b/Makefile
@@ -21,13 +21,11 @@ test:
 
 .PHONY: format
 format:
-	python -m isort --recursive -y $(SOURCES)
-	python -m black $(SOURCES)
+	python -m ufmt format $(SOURCES)
 
 .PHONY: lint
 lint:
-	python -m isort --recursive --diff $(SOURCES)
-	python -m black --check $(SOURCES)
+	python -m ufmt check $(SOURCES)
 	python -m flake8 $(SOURCES)
 	mypy --strict squatter
 
diff --git a/README.md b/README.md
index 5bc1e90..938e29c 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ python -m squatter generate --upload mypackage
 
 # License
 
-Squatter is copyright [John Reese](https://noswap.com/), and licensed under
+Squatter is copyright [Amethyst Reese](https://noswap.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.
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 73764e9..8547d4e 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,9 +1,10 @@
-black==19.10b0
-coverage==4.5.4
-flake8==3.7.9
-isort==4.3.21
-mypy==0.750
-tox==3.14.1
-twine==3.1.1
+black==24.1a1
+coverage==7.4.0
+flake8==7.0.0
+mypy==1.8.0
+tox==4.12.0
+twine==4.0.2
 volatile==2.1.0
-wheel==0.38.1
+wheel==0.42.0
+ufmt==2.3.0
+usort==1.0.7
diff --git a/setup.cfg b/setup.cfg
index 93613da..4f050d8 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -5,18 +5,19 @@ long_description = file: README.md
 long_description_content_type = text/markdown
 license = MIT
 url = https://github.com/python-packaging/squatter
-author = John Reese
-author_email = john@noswap.com
+author = Amethyst Reese
+author_email = amy@n7.gg
 
 [options]
 packages = squatter
 setup_requires =
-    setuptools_scm
+    setuptools_scm >= 8
     setuptools >= 38.3.0
-python_requires = >=3.6
+python_requires = >=3.11
 
-[bdist_wheel]
-universal = true
+[options.entry_points]
+console_scripts =
+  squatter = squatter.__main__:cli
 
 [check]
 metadata = true
@@ -33,18 +34,11 @@ precision = 1
 show_missing = True
 skip_covered = True
 
-[isort]
-line_length = 88
-multi_line_output = 3
-force_grid_wrap = False
-include_trailing_comma = True
-use_parentheses = True
-
 [mypy]
 ignore_missing_imports = True
 
 [tox:tox]
-envlist = py36, py37, py38
+envlist = py311, py312
 
 [testenv]
 deps = -rrequirements-dev.txt
@@ -52,7 +46,7 @@ whitelist_externals = make
 commands =
     make test
 setenv =
-    py{36,37,38}: COVERAGE_FILE={envdir}/.coverage
+    py{311,312}: COVERAGE_FILE={envdir}/.coverage
 
 [flake8]
 ignore = E203, E231, E266, E302, E501, W503
diff --git a/squatter/tests/__init__.py b/squatter/tests/__init__.py
index 1964591..06aa9c8 100644
--- a/squatter/tests/__init__.py
+++ b/squatter/tests/__init__.py
@@ -36,7 +36,7 @@ def test_env_git_prompts(self, check_output_mock: Any) -> None:
             ("git", "config", "user.name"): "Bob",
             ("git", "config", "user.email"): "email@example.com",
         }
-        check_output_mock.side_effect = lambda cmd, **kwargs: tbl[tuple(cmd)]  # type: ignore
+        check_output_mock.side_effect = lambda cmd, **kwargs: tbl[tuple(cmd)]
 
         with TemporaryDirectory() as d:
             env = Env(d)
@@ -62,7 +62,7 @@ def test_cli_functional(self, check_call_mock: Any, check_output_mock: Any) -> N
             ("git", "config", "user.name"): "Bob",
             ("git", "config", "user.email"): "email@example.com",
         }
-        check_output_mock.side_effect = lambda cmd, **kwargs: tbl[tuple(cmd)]  # type: ignore
+        check_output_mock.side_effect = lambda cmd, **kwargs: tbl[tuple(cmd)]
 
         uploads = 0