diff --git a/.github/workflows/continuous.yml b/.github/workflows/continuous.yml
index 9c176840..b7db2a24 100644
--- a/.github/workflows/continuous.yml
+++ b/.github/workflows/continuous.yml
@@ -29,13 +29,15 @@ jobs:
         # This path is specific to Ubuntu
         path: ~/.cache/pip
         # Look to see if there is a cache hit for the corresponding requirements file
-        key: ${{ runner.os }}-pip-${{ hashFiles('cli/dev/requirements.txt') }}
+        key: ${{ runner.os }}-pip-${{ hashFiles('cli/pyproject.toml') }}
         restore-keys: |
           ${{ runner.os }}-pip-
           ${{ runner.os }}-
 
     - name: Install RACK CLI development dependencies
-      run: pip3 install -q -r cli/dev/requirements.txt
+      run: |
+        cd cli
+        pip3 install "rack[dev]"
 
     - name: Lint RACK CLI
       run: |
@@ -108,9 +110,9 @@ jobs:
 
     - name: Run rack-box tests
       run: |
-        cd RACK
-        pip3 install -r cli/requirements.txt
-        pip3 install cli/.
+        cd RACK/cli
+        pip3 install .
+        cd ..
         pip3 install -r tests/requirements.txt
         python3 -m pytest tests
 
diff --git a/cli/dev/README.md b/cli/DEVELOPMENT.md
similarity index 92%
rename from cli/dev/README.md
rename to cli/DEVELOPMENT.md
index f65b39ba..cc77b84c 100644
--- a/cli/dev/README.md
+++ b/cli/DEVELOPMENT.md
@@ -15,8 +15,8 @@ are used to statically type-check the code. Usage is simple:
 
 ```shell
 source venv/bin/activate
-pip install -r dev/requirements.txt
-mypy .
+pip install ".[dev]"
+mypy rack
 ```
 
 ## Tests
@@ -25,8 +25,8 @@ You can run the tests with `pytest`:
 
 ```shell
 source venv/bin/activate
-pip install -r dev/requirements.txt
-python3 setup.py install && pytest
+pip install ".[dev]"
+pytest
 ```
 
 Note that you should _always install the code before testing_.
diff --git a/cli/README.md b/cli/README.md
index 5dc26985..91244885 100644
--- a/cli/README.md
+++ b/cli/README.md
@@ -46,8 +46,7 @@ the RACK-Box README.
 ```shell
 python3 -m venv venv
 source venv/bin/activate
-pip install --force -r requirements.txt
-python3 setup.py install
+pip install --force-reinstall .
 ```
 
 If running on Windows, [GitBash](https://gitforwindows.org/) can be used with the following commands.
@@ -55,8 +54,7 @@ If running on Windows, [GitBash](https://gitforwindows.org/) can be used with th
 ```shell
 python -m venv venv
 source venv/Scripts/activate
-pip install --force -r requirements.txt
-python setup.py install
+pip install --force-reinstall .
 ```
 
 ## Initialize RACK-in-a-Box
diff --git a/cli/dev/requirements.txt b/cli/dev/requirements.txt
deleted file mode 100644
index 209452b5..00000000
--- a/cli/dev/requirements.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-mypy==1.0.0
-pylint==2.16.2
-pytest-docker==1.0.1
-pytest==7.2.1
-typed-ast==1.5.4
-types-PyYAML==6.0.12.6
-types-requests==2.28.11.13
-types-tabulate==0.9.0.0
diff --git a/cli/pyproject.toml b/cli/pyproject.toml
new file mode 100644
index 00000000..d6a0c568
--- /dev/null
+++ b/cli/pyproject.toml
@@ -0,0 +1,48 @@
+[build-system]
+requires = ["setuptools", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "rack"
+version = "0.1"
+description = "Command-line interface to RACK"
+requires-python = ">=3.7"
+
+dependencies = [
+    "ase==3.22.1",
+    "attrs==23.1.0",
+    "certifi==2023.7.22",
+    "chardet==5.1.0",
+    "colorama==0.4.6",
+    "idna==3.4",
+    "importlib-metadata==6.7.0",
+    "jsonschema==4.17.3",
+    "pyrsistent==0.19.3",
+    "python-dateutil==2.8.2",
+    "PyYAML==6.0",
+    "requests==2.31.0",
+    "Pillow==9.4.0",
+    "plotly==5.15.0",
+    "semtk-python3 @ git+https://github.com/ge-semtk/semtk-python3@7995623e12e93b9b252200b9bd507949b8c0a430",
+    "six==1.16.0",
+    "tabulate==0.9.0",
+    "urllib3==2.0.3",
+    "zipp==3.15.0",
+]
+
+optional-dependencies.dev = [
+    "mypy==1.0.0",
+    "pylint==2.16.2",
+    "pytest-docker==1.0.1",
+    "pytest==7.2.1",
+    "typed-ast==1.5.4",
+    "types-PyYAML==6.0.12.6",
+    "types-requests==2.28.11.13",
+    "types-tabulate==0.9.0.0",
+]
+
+[tool.setuptools]
+packages = ["rack"]
+
+[project.scripts]
+rack = "rack.rack_cmd:main"
diff --git a/cli/bin/rack b/cli/rack/rack_cmd.py
similarity index 99%
rename from cli/bin/rack
rename to cli/rack/rack_cmd.py
index ae8a0c65..2406d88d 100755
--- a/cli/bin/rack
+++ b/cli/rack/rack_cmd.py
@@ -31,7 +31,7 @@
 
 logger = logging.getLogger(__name__)
 
-if __name__ == "__main__":
+def main():
     # Sets up colors for Windows users
     colorama.init()
 
diff --git a/cli/requirements.txt b/cli/requirements.txt
deleted file mode 100644
index e3305931..00000000
--- a/cli/requirements.txt
+++ /dev/null
@@ -1,19 +0,0 @@
-ase==3.22.1
-attrs==23.1.0
-certifi==2023.7.22
-chardet==5.1.0
-colorama==0.4.6
-idna==3.4
-importlib-metadata==6.7.0
-jsonschema==4.17.3
-pyrsistent==0.19.3
-python-dateutil==2.8.2
-PyYAML==6.0
-requests==2.31.0
-Pillow==9.4.0
-plotly==5.15.0
-semtk-python3 @ git+https://github.com/ge-semtk/semtk-python3@7995623e12e93b9b252200b9bd507949b8c0a430
-six==1.16.0
-tabulate==0.9.0
-urllib3==2.0.3
-zipp==3.15.0
diff --git a/cli/setup.py b/cli/setup.py
deleted file mode 100644
index d8e248d4..00000000
--- a/cli/setup.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from setuptools import setup, find_packages
-
-setup(
-    name="rack",
-    scripts=["bin/rack"],
-    packages=find_packages(),
-)