diff --git a/README.rst b/README.rst
index 2b05221..75aaff9 100644
--- a/README.rst
+++ b/README.rst
@@ -266,7 +266,6 @@ macOS).
 * Clone: ``git clone git@github.com:walles/px.git ; cd px``
 * Build and test: ``./tox.sh``
 * Run: ``./px.pex``
-* To add dependencies, edit ``requirements.txt``
 
 You can also run ``./devbin/tox-in-docker.sh``, which can be used to run Linux
 tests on a Mac.
diff --git a/devbin/make-executable-zip.sh b/devbin/make-executable-zip.sh
index 342a20c..5245ec8 100755
--- a/devbin/make-executable-zip.sh
+++ b/devbin/make-executable-zip.sh
@@ -21,7 +21,6 @@ python3 -m venv "$ENVDIR"
 
 # shellcheck source=/dev/null
 . "$ENVDIR/bin/activate"
-pip install -r "$ROOTDIR/requirements.txt"
 
 # Set up file structure in our temporary directory
 echo 'import px.px; px.px.main()' >"$WORKDIR/__main__.py"
@@ -29,10 +28,6 @@ echo 'import px.px; px.px.main()' >"$WORKDIR/__main__.py"
 # The main attraction!
 cp -a "$ROOTDIR/px" "$WORKDIR/"
 
-# Dependencies, must match list in requirements.txt
-#
-# NOTE: This section intentionally left blank
-
 # Tidy up a bit
 find "$WORKDIR" -name '*.pyc' -delete
 
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 1e6774e..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,9 +0,0 @@
-# These are runtime dependencies, we want them weak to improve
-# co-existence with other packages if installed globally using
-# pip.
-
-# NOTE: If you change something here, you must update make-executable-zip.sh as
-# well, search for "requirements.txt"!
-
-# NOTE: This file intentionally left blank because we don't have any third-party
-# runtime dependencies.
\ No newline at end of file
diff --git a/setup.py b/setup.py
index fadbf7f..76d7886 100755
--- a/setup.py
+++ b/setup.py
@@ -2,34 +2,31 @@
 
 import os
 import re
-import subprocess
 
 from setuptools import setup
 
-from devbin import update_version_py
+from px import version
 
-update_version_py.main()
+try:
+    from devbin import update_version_py
 
-git_version = (
-    subprocess.check_output(["git", "describe", "--dirty"]).decode("utf-8").strip()
-)
-
-requirements = None
-with open("requirements.txt", encoding="utf-8") as reqsfile:
-    requirements = reqsfile.readlines()
+    update_version_py.main()
+except ModuleNotFoundError:
+    print("Devbin not found, assuming source distribution, not updating version.py")
 
 with open(
     os.path.join(os.path.dirname(__file__), "README.rst"), encoding="utf-8"
 ) as fp:
     LONG_DESCRIPTION = fp.read()
 
-if not re.match(r"^[0-9]+\.[0-9]+\.[0-9]+$", git_version):
+version_for_setuptools = version.VERSION
+if not re.match(r"^[0-9]+\.[0-9]+\.[0-9]+$", version_for_setuptools):
     # Setuptools wants nice version numbers
-    git_version = "0.0.0"
+    version_for_setuptools = "0.0.0"
 
 setup(
     name="pxpx",
-    version=git_version,
+    version=version_for_setuptools,
     description="ps and top for Human Beings",
     long_description=LONG_DESCRIPTION,
     long_description_content_type="text/x-rst",
@@ -50,15 +47,11 @@
         "Topic :: Utilities",
     ],
     packages=["px"],
-    install_requires=requirements,
     # See: http://setuptools.readthedocs.io/en/latest/setuptools.html#setting-the-zip-safe-flag
     zip_safe=True,
     setup_requires=[
         "pytest-runner",
     ],
-    tests_require=[
-        "pytest",
-    ],
     entry_points={
         "console_scripts": [
             "px = px.px:main",
diff --git a/tox.ini b/tox.ini
index 67da2d3..9116624 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,7 +8,7 @@ minversion = 3.8.0
 mypy_version = 1.11.2
 ruff_version = 0.6.5
 pytest_version = 8.2.2
-setuptools_version = 68.2.2
+setuptools_version = 74.1.2
 
 envlist=
     version.py
@@ -62,7 +62,6 @@ depends = version.py, ruff-format
 deps =
     ruff=={[tox]ruff_version}
     pytest=={[tox]pytest_version}
-    -r requirements.txt
 
 # Auto-fix locally but not in CI
 commands =
@@ -83,7 +82,6 @@ deps =
     pytest == {[tox]pytest_version}
     pytest-avoidance == 0.3.0
     python-dateutil >= 2.6.1
-    -r requirements.txt
 commands =
     pytest --durations=10 --color=yes tests
 
@@ -118,13 +116,12 @@ allowlist_externals =
     /bin/rm
 deps =
     setuptools == {[tox]setuptools_version}
-    wheel == 0.35.1
+    build == 1.2.2
 commands =
     # clean up build/ and dist/ folders
     /bin/rm -rf build dist
     # build wheel
-    /bin/rm -rf dist
-    python setup.py bdist_wheel --bdist-dir {toxinidir}/bdist --dist-dir {toxinidir}/dist
+    python -m build --outdir {toxinidir}/dist
     # Start testing it
     /bin/bash -c "pip uninstall --yes pxpx"
     /bin/bash -c "pip install {toxinidir}/dist/pxpx-*.whl"