diff --git a/.github/workflows/publish-release.yml b/.github/workflows/publish-release.yml
index a9f1ccae9..c30294f91 100644
--- a/.github/workflows/publish-release.yml
+++ b/.github/workflows/publish-release.yml
@@ -56,7 +56,7 @@ jobs:
         if: ${{ steps.changes.outputs.utils == 'true' }}
         run: git tag delphi-utils/v${{ steps.utils.outputs.version }}
       - name: Publish tags
-        run: git push --tags 
+        run: git push --tags
     outputs:
       indicators-version: ${{ steps.indicators.outputs.version }}
       utils-version: ${{ steps.utils.outputs.version }}
@@ -76,10 +76,6 @@ jobs:
         uses: actions/setup-python@v2
         with:
           python-version: 3.8
-      - name: Install testing dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install pylint pytest pydocstyle wheel twine
       - name: Install
         run: |
           make install
diff --git a/.github/workflows/python-ci.yml b/.github/workflows/python-ci.yml
index 3e1ee9689..8f5a733ae 100644
--- a/.github/workflows/python-ci.yml
+++ b/.github/workflows/python-ci.yml
@@ -51,11 +51,7 @@ jobs:
         with:
           python-version: 3.8
           cache: "pip"
-          cache-dependency-path: "setup.py"
-      - name: Install testing dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install pylint pytest pydocstyle wheel
+          cache-dependency-path: "pyproject.toml"
       - name: Install
         run: |
           make install-ci
diff --git a/_delphi_utils_python/.bumpversion.cfg b/_delphi_utils_python/.bumpversion.cfg
index 722a91e30..af22c56eb 100644
--- a/_delphi_utils_python/.bumpversion.cfg
+++ b/_delphi_utils_python/.bumpversion.cfg
@@ -4,6 +4,6 @@ commit = True
 message = chore: bump delphi_utils to {new_version}
 tag = False
 
-[bumpversion:file:setup.py]
+[bumpversion:file:pyproject.toml]
 
 [bumpversion:file:delphi_utils/__init__.py]
diff --git a/_delphi_utils_python/DEVELOP.md b/_delphi_utils_python/DEVELOP.md
index 2407e29a8..53ffde93f 100644
--- a/_delphi_utils_python/DEVELOP.md
+++ b/_delphi_utils_python/DEVELOP.md
@@ -9,7 +9,7 @@ To install the module in your default version of Python, run the
 following from this directory:
 
 ```
-pip install .
+pip install -e '.[dev]'
 ```
 
 As described in each of the indicator code directories, you will want to install
diff --git a/_delphi_utils_python/Makefile b/_delphi_utils_python/Makefile
index 79d7f7943..6aa241e96 100644
--- a/_delphi_utils_python/Makefile
+++ b/_delphi_utils_python/Makefile
@@ -1,17 +1,17 @@
 .PHONY = venv, lint, test, clean, release
 
 venv:
-	python3.8 -m venv env
+	python3.8 -m venv env; \
+	. env/bin/activate; \
+	python -m pip install pip==23.0.1
 
 install: venv
 	. env/bin/activate; \
-	pip install wheel ; \
-	pip install -e .
+	pip install -e '.[dev]'
 
 install-ci: venv
 	. env/bin/activate; \
-	pip install wheel ; \
-	pip install .
+	pip install '.[dev]'
 
 lint:
 	. env/bin/activate; pylint delphi_utils --rcfile=../pyproject.toml
@@ -30,4 +30,4 @@ clean:
 
 release: lint test
 	. env/bin/activate ; \
-	python setup.py sdist bdist_wheel
+	python -m build --sdist --wheel
diff --git a/_delphi_utils_python/pyproject.toml b/_delphi_utils_python/pyproject.toml
new file mode 100644
index 000000000..c72f4fb83
--- /dev/null
+++ b/_delphi_utils_python/pyproject.toml
@@ -0,0 +1,59 @@
+[build-system]
+requires = ["setuptools>=70.1", "setuptools-scm>=8.0"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "delphi-utils"
+version = "0.3.24"
+description = "Shared Utility Functions for Indicators"
+readme = "README.md"
+requires-python = "== 3.8.*"
+license = { text = "MIT License" }
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "Programming Language :: Python :: 3.8",
+    "License :: MIT",
+]
+dependencies = [
+    "boto3",
+    "covidcast",
+    "cvxpy",
+    "epiweeks",
+    "gitpython",
+    "importlib_resources>=1.3",
+    "numpy",
+    "pandas>=1.1.0",
+    "requests",
+    "slackclient",
+    "scs<3.2.6",                # TODO: remove this ; it is a cvxpy dependency, and the excluded version appears to break our jenkins build. see: https://github.com/cvxgrp/scs/issues/283
+    "structlog",
+    "xlrd",                     # needed by Pandas to read Excel files
+]
+
+[project.urls]
+Homepage = "https://github.com/cmu-delphi/covidcast-indicators"
+
+[project.optional-dependencies]
+dev = [
+    "build[virtualenv]",
+    "darker[isort]~=2.1.1",
+    "pylint==2.8.3",
+    "pytest",
+    "pydocstyle",
+    "pytest-cov",
+    "mock",
+    "moto~=4.2.14",
+    "requests-mock",
+    "freezegun",
+    "twine"
+]
+flash = ["scipy"]
+
+[tool.setuptools.packages.find]
+where = ["."]
+include = ["delphi_utils"]
+namespaces = true
+
+[tool.setuptools.package-data]
+"delphi_utils.data" = ["20*/*.csv"]
diff --git a/_delphi_utils_python/setup.py b/_delphi_utils_python/setup.py
deleted file mode 100644
index 3dee89b53..000000000
--- a/_delphi_utils_python/setup.py
+++ /dev/null
@@ -1,48 +0,0 @@
-from setuptools import setup
-from setuptools import find_packages
-
-with open("README.md", "r") as f:
-    long_description = f.read()
-
-required = [
-    "boto3",
-    "covidcast",
-    "cvxpy",
-    "scs<3.2.6", # TODO: remove this ; it is a cvxpy dependency, and the excluded version appears to break our jenkins build. see: https://github.com/cvxgrp/scs/issues/283
-    "darker[isort]~=2.1.1",
-    "epiweeks",
-    "freezegun",
-    "gitpython",
-    "importlib_resources>=1.3",
-    "mock",
-    "moto~=4.2.14",
-    "numpy",
-    "pandas>=1.1.0",
-    "pydocstyle",
-    "pylint==2.8.3",
-    "pytest-cov",
-    "pytest",
-    "requests-mock",
-    "slackclient",
-    "structlog",
-    "xlrd"
-]
-
-setup(
-    name="delphi_utils",
-    version="0.3.24",
-    description="Shared Utility Functions for Indicators",
-    long_description=long_description,
-    long_description_content_type="text/markdown",
-    author="",
-    author_email="",
-    url="https://github.com/cmu-delphi/",
-    install_requires=required,
-    classifiers=[
-        "Development Status :: 5 - Production/Stable",
-        "Intended Audience :: Developers",
-        "Programming Language :: Python :: 3.8",
-    ],
-    packages=find_packages(),
-    package_data={'': ['data/20*/*.csv']}
-)
diff --git a/_template_python/Makefile b/_template_python/Makefile
index 390113eef..b34394efb 100644
--- a/_template_python/Makefile
+++ b/_template_python/Makefile
@@ -2,17 +2,17 @@
 
 dir = $(shell find ./delphi_* -name __init__.py | grep -o 'delphi_[_[:alnum:]]*' | head -1)
 venv:
-	python3.8 -m venv env
+	python3.8 -m venv env; \
+	. env/bin/activate; \
+	python -m pip install pip==23.0.1
 
 install: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install -e ../_delphi_utils_python ;\
 	pip install -e .
 
 install-ci: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install ../_delphi_utils_python ;\
 	pip install .
 
diff --git a/_template_python/pyproject.toml b/_template_python/pyproject.toml
new file mode 100644
index 000000000..c29d9650e
--- /dev/null
+++ b/_template_python/pyproject.toml
@@ -0,0 +1,42 @@
+[build-system]
+requires = ["setuptools", "setuptools-scm>=8.0"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "delphi_NAME"
+version = "0.1.0"
+description = "SHORT DESCRIPTION"
+readme = "README.md"
+requires-python = "== 3.8.*"
+license = { text = "MIT License" }
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "Programming Language :: Python :: 3.8",
+    "License :: MIT",
+]
+dependencies = [
+    "delphi-utils",
+    "numpy",
+    "pandas>=1.1.0",
+]
+
+[project.urls]
+Homepage = "https://github.com/cmu-delphi/covidcast-indicators"
+
+[project.optional-dependencies]
+dev = [
+    "darker[isort]~=2.1.1",
+    "pylint==2.8.3",
+    "pytest",
+    "pydocstyle",
+    "pytest-cov",
+    "mock",
+    "moto~=4.2.14",
+    "requests-mock",
+    "freezegun",
+]
+
+[tool.setuptools.packages.find]
+where = ["."]
+namespaces = true
diff --git a/_template_python/setup.py b/_template_python/setup.py
deleted file mode 100644
index d7bc44078..000000000
--- a/_template_python/setup.py
+++ /dev/null
@@ -1,30 +0,0 @@
-from setuptools import setup
-from setuptools import find_packages
-
-required = [
-    "covidcast",
-    "darker[isort]~=2.1.1",
-    "delphi-utils",
-    "numpy",
-    "pandas",
-    "pydocstyle",
-    "pylint==2.8.3",
-    "pytest-cov",
-    "pytest",
-]
-
-setup(
-    name="delphi_NAME",
-    version="0.1.0",
-    description="SHORT DESCRIPTION",
-    author="",
-    author_email="",
-    url="https://github.com/cmu-delphi/covidcast-indicators",
-    install_requires=required,
-    classifiers=[
-        "Development Status :: 5 - Production/Stable",
-        "Intended Audience :: Developers",
-        "Programming Language :: Python :: 3.8",
-    ],
-    packages=find_packages(),
-)
diff --git a/backfill_corrections/Makefile b/backfill_corrections/Makefile
index d479237be..ba0321734 100644
--- a/backfill_corrections/Makefile
+++ b/backfill_corrections/Makefile
@@ -56,7 +56,7 @@ install-python:
 	fi
 	python3 -m venv env
 	source env/bin/activate && \
-	python -m pip install --upgrade pip && \
+	python -m pip install pip==23.0.1 && \
 	pip install wheel && \
 	pip install --timeout 1000 delphi_utils
 
diff --git a/changehc/Makefile b/changehc/Makefile
index 390113eef..b34394efb 100644
--- a/changehc/Makefile
+++ b/changehc/Makefile
@@ -2,17 +2,17 @@
 
 dir = $(shell find ./delphi_* -name __init__.py | grep -o 'delphi_[_[:alnum:]]*' | head -1)
 venv:
-	python3.8 -m venv env
+	python3.8 -m venv env; \
+	. env/bin/activate; \
+	python -m pip install pip==23.0.1
 
 install: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install -e ../_delphi_utils_python ;\
 	pip install -e .
 
 install-ci: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install ../_delphi_utils_python ;\
 	pip install .
 
diff --git a/changehc/setup.py b/changehc/setup.py
index d95beb771..f386e9613 100644
--- a/changehc/setup.py
+++ b/changehc/setup.py
@@ -6,6 +6,7 @@
     "covidcast",
     "darker[isort]~=2.1.1",
     "delphi-utils",
+    "mock",
     "moto~=4.2.14",
     "numpy",
     "pandas",
diff --git a/claims_hosp/Makefile b/claims_hosp/Makefile
index 390113eef..b34394efb 100644
--- a/claims_hosp/Makefile
+++ b/claims_hosp/Makefile
@@ -2,17 +2,17 @@
 
 dir = $(shell find ./delphi_* -name __init__.py | grep -o 'delphi_[_[:alnum:]]*' | head -1)
 venv:
-	python3.8 -m venv env
+	python3.8 -m venv env; \
+	. env/bin/activate; \
+	python -m pip install pip==23.0.1
 
 install: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install -e ../_delphi_utils_python ;\
 	pip install -e .
 
 install-ci: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install ../_delphi_utils_python ;\
 	pip install .
 
diff --git a/claims_hosp/setup.py b/claims_hosp/setup.py
index 3b859c294..5eb23cabb 100644
--- a/claims_hosp/setup.py
+++ b/claims_hosp/setup.py
@@ -6,6 +6,7 @@
     "darker[isort]~=2.1.1",
     "delphi-utils",
     "numpy",
+    "pydocstyle",
     "pandas",
     "paramiko",
     "pyarrow",
diff --git a/doctor_visits/Makefile b/doctor_visits/Makefile
index 390113eef..b34394efb 100644
--- a/doctor_visits/Makefile
+++ b/doctor_visits/Makefile
@@ -2,17 +2,17 @@
 
 dir = $(shell find ./delphi_* -name __init__.py | grep -o 'delphi_[_[:alnum:]]*' | head -1)
 venv:
-	python3.8 -m venv env
+	python3.8 -m venv env; \
+	. env/bin/activate; \
+	python -m pip install pip==23.0.1
 
 install: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install -e ../_delphi_utils_python ;\
 	pip install -e .
 
 install-ci: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install ../_delphi_utils_python ;\
 	pip install .
 
diff --git a/doctor_visits/setup.py b/doctor_visits/setup.py
index 17d6fc9af..e224b5d8e 100644
--- a/doctor_visits/setup.py
+++ b/doctor_visits/setup.py
@@ -5,6 +5,7 @@
     "darker[isort]~=2.1.1",
     "delphi-utils",
     "numpy",
+    "pydocstyle",
     "pandas",
     "paramiko",
     "pylint==2.8.3",
diff --git a/google_symptoms/Makefile b/google_symptoms/Makefile
index 6884278cf..62897971e 100644
--- a/google_symptoms/Makefile
+++ b/google_symptoms/Makefile
@@ -2,17 +2,17 @@
 
 dir = $(shell find ./delphi_* -name __init__.py | grep -o 'delphi_[_[:alnum:]]*' | head -1)
 venv:
-	python3.8 -m venv env
+	python3.8 -m venv env; \
+	. env/bin/activate; \
+	python -m pip install pip==23.0.1
 
 install: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install -e ../_delphi_utils_python ;\
 	pip install -e .
 
 install-ci: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install ../_delphi_utils_python ;\
 	pip install .
 
diff --git a/google_symptoms/setup.py b/google_symptoms/setup.py
index ccba3c47a..56621942f 100644
--- a/google_symptoms/setup.py
+++ b/google_symptoms/setup.py
@@ -8,6 +8,7 @@
     "freezegun",
     "mock",
     "numpy",
+    "pydocstyle",
     "pandas-gbq",
     "pandas",
     "pydocstyle",
diff --git a/hhs_hosp/Makefile b/hhs_hosp/Makefile
index 69529feb7..ca84eb7e6 100644
--- a/hhs_hosp/Makefile
+++ b/hhs_hosp/Makefile
@@ -2,17 +2,17 @@
 
 dir = $(shell find ./delphi_* -name __init__.py | grep -o 'delphi_[_[:alnum:]]*' | head -1)
 venv:
-	python3.8 -m venv env
+	python3.8 -m venv env; \
+	. env/bin/activate; \
+	python -m pip install pip==23.0.1
 
 install: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install -e ../_delphi_utils_python ;\
 	pip install -e .
 
 install-ci: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install ../_delphi_utils_python ;\
 	pip install .
 
diff --git a/jenkins/build-indicator.sh b/jenkins/build-indicator.sh
index 3d2315741..3b8e3338a 100755
--- a/jenkins/build-indicator.sh
+++ b/jenkins/build-indicator.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# Jenkins build 
+# Jenkins build
 #
 
 set -eo pipefail
@@ -14,7 +14,6 @@ cd "${WORKSPACE}/${local_indicator}" || exit
 # Set up venv
 python -m venv env
 source env/bin/activate
-pip install pip==23.0.1 --retries 10 --timeout 20
-pip install numpy --retries 10 --timeout 20
+python -m pip install pip==23.0.1 --retries 10 --timeout 20
 pip install ../_delphi_utils_python/. --retries 10 --timeout 20
 [ ! -f setup.py ] || pip install . --retries 10 --timeout 20
diff --git a/nchs_mortality/Makefile b/nchs_mortality/Makefile
index 390113eef..b34394efb 100644
--- a/nchs_mortality/Makefile
+++ b/nchs_mortality/Makefile
@@ -2,17 +2,17 @@
 
 dir = $(shell find ./delphi_* -name __init__.py | grep -o 'delphi_[_[:alnum:]]*' | head -1)
 venv:
-	python3.8 -m venv env
+	python3.8 -m venv env; \
+	. env/bin/activate; \
+	python -m pip install pip==23.0.1
 
 install: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install -e ../_delphi_utils_python ;\
 	pip install -e .
 
 install-ci: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install ../_delphi_utils_python ;\
 	pip install .
 
diff --git a/nchs_mortality/setup.py b/nchs_mortality/setup.py
index 3fe354ba4..142db6f35 100644
--- a/nchs_mortality/setup.py
+++ b/nchs_mortality/setup.py
@@ -2,10 +2,12 @@
 from setuptools import find_packages
 
 required = [
+    "boto3",
     "darker[isort]~=2.1.1",
     "delphi-utils",
     "epiweeks",
     "freezegun",
+    "moto~=4.2.14",
     "numpy",
     "pandas",
     "pydocstyle",
diff --git a/nssp/Makefile b/nssp/Makefile
index 390113eef..b34394efb 100644
--- a/nssp/Makefile
+++ b/nssp/Makefile
@@ -2,17 +2,17 @@
 
 dir = $(shell find ./delphi_* -name __init__.py | grep -o 'delphi_[_[:alnum:]]*' | head -1)
 venv:
-	python3.8 -m venv env
+	python3.8 -m venv env; \
+	. env/bin/activate; \
+	python -m pip install pip==23.0.1
 
 install: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install -e ../_delphi_utils_python ;\
 	pip install -e .
 
 install-ci: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install ../_delphi_utils_python ;\
 	pip install .
 
diff --git a/nwss_wastewater/Makefile b/nwss_wastewater/Makefile
index 390113eef..b34394efb 100644
--- a/nwss_wastewater/Makefile
+++ b/nwss_wastewater/Makefile
@@ -2,17 +2,17 @@
 
 dir = $(shell find ./delphi_* -name __init__.py | grep -o 'delphi_[_[:alnum:]]*' | head -1)
 venv:
-	python3.8 -m venv env
+	python3.8 -m venv env; \
+	. env/bin/activate; \
+	python -m pip install pip==23.0.1
 
 install: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install -e ../_delphi_utils_python ;\
 	pip install -e .
 
 install-ci: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install ../_delphi_utils_python ;\
 	pip install .
 
diff --git a/quidel_covidtest/Makefile b/quidel_covidtest/Makefile
index 390113eef..b34394efb 100644
--- a/quidel_covidtest/Makefile
+++ b/quidel_covidtest/Makefile
@@ -2,17 +2,17 @@
 
 dir = $(shell find ./delphi_* -name __init__.py | grep -o 'delphi_[_[:alnum:]]*' | head -1)
 venv:
-	python3.8 -m venv env
+	python3.8 -m venv env; \
+	. env/bin/activate; \
+	python -m pip install pip==23.0.1
 
 install: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install -e ../_delphi_utils_python ;\
 	pip install -e .
 
 install-ci: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install ../_delphi_utils_python ;\
 	pip install .
 
diff --git a/quidel_covidtest/setup.py b/quidel_covidtest/setup.py
index c2791930f..82c80832a 100644
--- a/quidel_covidtest/setup.py
+++ b/quidel_covidtest/setup.py
@@ -2,6 +2,7 @@
 from setuptools import find_packages
 
 required = [
+    "boto3",
     "covidcast",
     "darker[isort]~=2.1.1",
     "delphi-utils",
@@ -14,7 +15,7 @@
     "pylint==2.8.3",
     "pytest-cov",
     "pytest",
-    "xlrd==1.2.0",
+    "xlrd==1.2.0", # needed by Pandas to read Excel files
 ]
 
 setup(
diff --git a/sir_complainsalot/Makefile b/sir_complainsalot/Makefile
index 390113eef..b34394efb 100644
--- a/sir_complainsalot/Makefile
+++ b/sir_complainsalot/Makefile
@@ -2,17 +2,17 @@
 
 dir = $(shell find ./delphi_* -name __init__.py | grep -o 'delphi_[_[:alnum:]]*' | head -1)
 venv:
-	python3.8 -m venv env
+	python3.8 -m venv env; \
+	. env/bin/activate; \
+	python -m pip install pip==23.0.1
 
 install: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install -e ../_delphi_utils_python ;\
 	pip install -e .
 
 install-ci: venv
 	. env/bin/activate; \
-	pip install wheel ; \
 	pip install ../_delphi_utils_python ;\
 	pip install .
 
diff --git a/sir_complainsalot/setup.py b/sir_complainsalot/setup.py
index 157c001b2..4346a1b1b 100644
--- a/sir_complainsalot/setup.py
+++ b/sir_complainsalot/setup.py
@@ -6,6 +6,7 @@
     "darker[isort]~=2.1.1",
     "delphi-utils",
     "pandas",
+    "pydocstyle",
     "pylint==2.8.3",
     "pytest-cov",
     "pytest",