diff --git a/Dockerfile b/Dockerfile
index 4fc37341..bea64cb1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -48,7 +48,7 @@ COPY . /buildrunner-source
 RUN                                                              \
     cd /buildrunner-source &&                                    \
     sed -i s/jaraco-classes/jaraco.classes/ requirements.txt &&  \
-    python3 setup.py install &&                                  \
+    pip install . && \
     rm -rf /buildrunner-source
 
 # The following will install docker-engine. It's not needed for the container to run,
diff --git a/bin/buildrunner b/bin/buildrunner
index be909b7c..0f8a6715 100755
--- a/bin/buildrunner
+++ b/bin/buildrunner
@@ -9,4 +9,4 @@ from buildrunner import cli
 
 
 if __name__ == "__main__":
-    sys.exit(cli.main(sys.argv))
+    sys.exit(cli.main())
diff --git a/bin/buildrunner-cleanup b/bin/buildrunner-cleanup
index 22190b41..cc460805 100755
--- a/bin/buildrunner-cleanup
+++ b/bin/buildrunner-cleanup
@@ -9,4 +9,4 @@ from buildrunner import cli
 
 
 if __name__ == "__main__":
-    sys.exit(cli.clean_cache(sys.argv))
+    sys.exit(cli.clean_cache())
diff --git a/buildrunner/cli.py b/buildrunner/cli.py
old mode 100644
new mode 100755
index fc32648b..f5082333
--- a/buildrunner/cli.py
+++ b/buildrunner/cli.py
@@ -270,9 +270,9 @@ def parse_args(argv):
     return args
 
 
-def clean_cache(argv):
+def clean_cache():
     """Cache cleanup"""
-    args = parse_args(argv)
+    args = parse_args(sys.argv)
     BuildRunnerConfig.initialize_instance(
         push=False,
         build_number=1,
@@ -409,9 +409,9 @@ def initialize_br(args: argparse.Namespace) -> BuildRunner:
     )
 
 
-def main(argv):
+def main():
     """Main program execution."""
-    args = parse_args(argv)
+    args = parse_args(sys.argv)
 
     # are we just printing the version?
     if args.print_version:
@@ -431,4 +431,4 @@ def main(argv):
 
 
 if __name__ == "__main__":
-    sys.exit(main(sys.argv))
+    sys.exit(main())
diff --git a/buildrunner/docker/runner.py b/buildrunner/docker/runner.py
index be4a22c5..6f733574 100644
--- a/buildrunner/docker/runner.py
+++ b/buildrunner/docker/runner.py
@@ -23,7 +23,6 @@
 from docker.utils import compare_version
 from retry import retry
 import docker.errors
-import six
 import timeout_decorator
 
 from buildrunner import BuildRunnerConfig
@@ -217,7 +216,7 @@ def start(
             _port_list = list(ports.keys())
 
         # check args
-        if dns_search and isinstance(dns_search, six.string_types):
+        if dns_search and isinstance(dns_search, str):
             dns_search = dns_search.split(",")
 
         kwargs = {
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 00000000..635c323a
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,36 @@
+[build-system]
+requires = ["setuptools>=42", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "buildrunner"
+version = "3.15"
+description = "Docker-based build tool"
+readme = "README.rst"
+requires-python = ">=3.6"
+license = {text = "MIT"}
+authors = [
+    {name = "Adobe", email = "noreply@adobe.com"}
+]
+urls = { "Homepage" = "https://github.com/adobe/buildrunner" }
+
+dynamic = ["dependencies", "optional-dependencies"]
+
+[tool.setuptools.dynamic]
+dependencies = {file = ["requirements.txt"]}
+optional-dependencies = {test = { file = ["test-requirements.txt"] }}
+
+[project.scripts]
+buildrunner = "buildrunner.cli:main"
+buildrunner-cleanup = "buildrunner.cli:clean_cache"
+
+[tool.setuptools.package-data]
+"buildrunner" = ["SourceDockerfile"]
+"buildrunner.sshagent" = [
+    "SSHAgentProxyImage/Dockerfile",
+    "SSHAgentProxyImage/run.sh",
+    "SSHAgentProxyImage/login.sh"
+]
+
+[tool.setuptools.packages.find]
+exclude = ["*.tests", "*.tests.*", "tests.*", "tests"]
\ No newline at end of file
diff --git a/requirements.in b/requirements.in
index f5ef65fd..5aabbe04 100644
--- a/requirements.in
+++ b/requirements.in
@@ -6,12 +6,12 @@ docker>=6.1.2
 fabric>=2.5.0
 paramiko>=2.10.3
 requests>=2.27.0
-twine>=3.2.0
+twine>=6.1.0
 vcsinfo>=2.1.105
 graphlib-backport>=1.0.3
 timeout-decorator>=0.5.0
 python-on-whales>=0.70.1
-pydantic>=2.4.2
+pydantic==2.4.2
 retry2>=0.9.5
 colorlog>=6.8.0
 rich>=13
diff --git a/requirements.txt b/requirements.txt
index 41155458..72455b66 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,83 +1,94 @@
 #
-# This file is autogenerated by pip-compile with Python 3.11
+# This file is autogenerated by pip-compile with Python 3.8
 # by the following command:
 #
 #    pip-compile
 #
-annotated-types==0.6.0
+
+annotated-types==0.7.0
     # via pydantic
-bcrypt==4.0.1
+backports-tarfile==1.2.0
+    # via jaraco-context
+bcrypt==4.3.0
     # via
     #   -r requirements.in
     #   paramiko
-bleach==6.0.0
-    # via readme-renderer
-certifi==2023.5.7
+certifi==2025.1.31
     # via requests
-cffi==1.15.1
+cffi==1.17.1
     # via
     #   cryptography
     #   pynacl
-charset-normalizer==3.1.0
+charset-normalizer==3.4.1
     # via requests
-click==8.1.6
-    # via typer
-colorlog==6.8.0
+colorlog==6.9.0
     # via -r requirements.in
-cryptography==41.0.1
+cryptography==44.0.2
     # via paramiko
-decorator==5.1.1
+decorator==5.2.1
     # via
     #   -r requirements.in
     #   fabric
     #   retry2
-docker==6.1.3
+deprecated==1.2.18
+    # via fabric
+docker==7.1.0
     # via -r requirements.in
 docutils==0.20.1
     # via readme-renderer
-fabric==3.1.0
+fabric==3.2.2
     # via -r requirements.in
-gitdb==4.0.10
+gitdb==4.0.12
     # via
     #   gitpython
     #   vcsinfo
-gitpython==3.1.31
+gitpython==3.1.44
     # via vcsinfo
-graphlib-backport==1.0.3
+graphlib-backport==1.1.0
     # via -r requirements.in
-idna==3.4
+id==1.5.0
+    # via twine
+idna==3.10
     # via requests
-importlib-metadata==6.6.0
+importlib-metadata==8.5.0
     # via
     #   keyring
     #   twine
-invoke==2.1.2
+importlib-resources==6.4.5
+    # via keyring
+invoke==2.2.0
     # via fabric
-jaraco-classes==3.2.3
+jaraco-classes==3.4.0
     # via keyring
-jinja2==3.1.2
+jaraco-context==6.0.1
+    # via keyring
+jaraco-functools==4.1.0
+    # via keyring
+jinja2==3.1.6
     # via -r requirements.in
-keyring==23.13.1
+keyring==25.5.0
     # via twine
-markdown-it-py==2.2.0
+markdown-it-py==3.0.0
     # via rich
-markupsafe==2.1.3
+markupsafe==2.1.5
     # via jinja2
 mdurl==0.1.2
     # via markdown-it-py
-more-itertools==9.1.0
-    # via jaraco-classes
-packaging==23.1
-    # via docker
-paramiko==3.2.0
+more-itertools==10.5.0
+    # via
+    #   jaraco-classes
+    #   jaraco-functools
+nh3==0.2.21
+    # via readme-renderer
+packaging==24.2
+    # via twine
+paramiko==3.5.1
     # via
     #   -r requirements.in
     #   fabric
-pkginfo==1.9.6
-    # via twine
-portalocker==2.10.1
+portalocker==3.0.0
     # via -r requirements.in
-pycparser==2.21
+pycparser==2.22
     # via cffi
 pydantic==2.4.2
     # via
@@ -85,23 +96,23 @@ pydantic==2.4.2
     #   python-on-whales
 pydantic-core==2.10.1
     # via pydantic
-pygments==2.15.1
+pygments==2.19.1
     # via
     #   readme-renderer
     #   rich
 pynacl==1.5.0
     # via paramiko
-python-on-whales==0.70.1
+python-on-whales==0.75.1
     # via -r requirements.in
-pyyaml==6.0.1
+pyyaml==6.0.2
     # via -r requirements.in
-readme-renderer==37.3
+readme-renderer==43.0
     # via twine
-requests==2.31.0
+requests==2.32.3
     # via
     #   -r requirements.in
     #   docker
-    #   python-on-whales
+    #   id
     #   requests-toolbelt
     #   twine
 requests-toolbelt==1.0.0
@@ -110,38 +121,33 @@ retry2==0.9.5
     # via -r requirements.in
 rfc3986==2.0.0
     # via twine
-rich==13.7.0
+rich==13.9.4
     # via
     #   -r requirements.in
     #   twine
-six==1.16.0
-    # via bleach
-smmap==5.0.0
+smmap==5.0.2
     # via gitdb
 timeout-decorator==0.5.0
     # via -r requirements.in
-tqdm==4.65.0
-    # via python-on-whales
-twine==4.0.2
+twine==6.1.0
     # via -r requirements.in
-typer==0.9.0
-    # via python-on-whales
-typing-extensions==4.7.1
+typing-extensions==4.13.0
     # via
+    #   annotated-types
     #   pydantic
     #   pydantic-core
     #   python-on-whales
-    #   typer
-urllib3==2.0.3
+    #   rich
+urllib3==2.2.3
     # via
     #   docker
     #   requests
     #   twine
-vcsinfo==2.1.105
+vcsinfo==2.1.110
     # via -r requirements.in
-webencodings==0.5.1
-    # via bleach
-websocket-client==1.5.2
-    # via docker
-zipp==3.15.0
-    # via importlib-metadata
+wrapt==1.17.2
+    # via deprecated
+zipp==3.20.2
+    # via
+    #   importlib-metadata
+    #   importlib-resources
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 8ebba34e..00000000
--- a/setup.py
+++ /dev/null
@@ -1,156 +0,0 @@
-"""
-Copyright (C) 2023 Adobe
-"""
-
-from __future__ import print_function
-
-import importlib.machinery
-import os
-import subprocess
-import sys
-import types
-
-from setuptools import setup, find_packages
-
-
-BASE_VERSION = "3.15"
-
-SOURCE_DIR = os.path.dirname(os.path.abspath(__file__))
-BUILDRUNNER_DIR = os.path.join(SOURCE_DIR, "buildrunner")
-VERSION_FILE = os.path.join(BUILDRUNNER_DIR, "version.py")
-
-THIS_DIR = os.path.dirname(__file__)
-
-
-def read_requirements(filename):
-    """
-    :param filename:
-    """
-    requires = []
-    dep_links = []
-    try:
-        with open(os.path.join(THIS_DIR, filename)) as robj:
-            lnr = 0
-            for line in robj.readlines():
-                lnr += 1
-                _line = line.strip()
-                if not _line:
-                    continue
-                if _line.startswith("#"):
-                    continue
-
-                if _line.startswith("--extra-index-url"):
-                    args = _line.split(None, 1)
-                    if len(args) != 2:
-                        print(
-                            'ERROR: option "--extra-index-url" must have a URL argument: {}:{}'.format(
-                                filename, lnr
-                            ),
-                            file=sys.stderr,
-                        )
-                        continue
-                    dep_links.append(args[1])
-
-                elif _line[0].isalpha():
-                    # See note in Dockerfile for why this replacement is done
-                    requires.append(_line.replace("jaraco-classes", "jaraco.classes"))
-
-                else:
-                    print(
-                        'ERROR: {}:{}:"{}" does not appear to be a requirement'.format(
-                            filename, lnr, _line
-                        ),
-                        file=sys.stderr,
-                    )
-
-    except IOError as err:
-        sys.stderr.write('Failure reading "{0}": {1}\n'.format(filename, err))
-        sys.exit(err.errno)
-
-    return requires, dep_links
-
-
-REQUIRES, DEP_LINKS = read_requirements("requirements.txt")
-requirements, dependency_links = read_requirements("test_requirements.txt")
-TEST_REQUIRES = requirements
-DEP_LINKS.extend(dependency_links)
-
-
-def get_version():
-    """
-    Call out to the git command line to get the current commit "number".
-    """
-    if os.path.exists(VERSION_FILE):
-        # Read version from file
-        loader = importlib.machinery.SourceFileLoader(
-            "buildrunner_version", VERSION_FILE
-        )
-        version_mod = types.ModuleType(loader.name)
-        loader.exec_module(version_mod)
-        existing_version = version_mod.__version__  # pylint: disable=no-member
-        return existing_version
-
-    # Generate the version from the base version and the git commit number, then store it in the file
-    try:
-        cmd = subprocess.Popen(
-            args=[
-                "git",
-                "rev-list",
-                "--count",
-                "HEAD",
-            ],
-            stdout=subprocess.PIPE,
-            stderr=subprocess.PIPE,
-            encoding="utf8",
-        )
-        stdout = cmd.communicate()[0]
-        output = stdout.strip()
-        if cmd.returncode == 0:
-            new_version = "{0}.{1}".format(BASE_VERSION, output)
-
-            # write the version file
-            if os.path.exists(BUILDRUNNER_DIR):
-                with open(VERSION_FILE, "w", encoding="utf8") as _fobj:
-                    _fobj.write("__version__ = '%s'\n" % new_version)
-            return new_version
-    except Exception as exc:  # pylint: disable=broad-except
-        print(f"Could not generate version from git commits: {exc}")
-    # If all else fails, use development version
-    return f"{BASE_VERSION}.DEVELOPMENT"
-
-
-with open(os.path.join(os.path.dirname(__file__), "README.rst")) as fobj:
-    long_description = fobj.read().strip()
-
-setup(
-    name="buildrunner",
-    version=get_version(),
-    author="Adobe",
-    author_email="noreply@adobe.com",
-    license="MIT",
-    url="https://github.com/adobe/buildrunner",
-    description="Docker-based build tool",
-    long_description=long_description,
-    long_description_content_type="text/x-rst",
-    packages=find_packages(exclude=["*.tests", "*.tests.*", "tests.*", "tests"]),
-    scripts=[
-        "bin/buildrunner",
-        "bin/buildrunner-cleanup",
-    ],
-    package_data={
-        "buildrunner": ["SourceDockerfile"],
-        "buildrunner.sshagent": [
-            "SSHAgentProxyImage/Dockerfile",
-            "SSHAgentProxyImage/run.sh",
-            "SSHAgentProxyImage/login.sh",
-        ],
-    },
-    install_requires=REQUIRES,
-    tests_require=TEST_REQUIRES,
-    dependency_links=DEP_LINKS,
-    test_suite="tests",
-)
-
-# Local Variables:
-# fill-column: 100
-# End: