diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index d46a166..23ef853 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -18,10 +18,22 @@ jobs:
       # Eventually this step should be replaced with pip install .[test] instead.
       # BUG: pip install .[test] does not install pytest. See pipeline number 3.
       - name: Install Dependencies.
-        run: python3 -m pip install '.' pytest twine build docker
+        run: |-
+          python3 -m venv .venv
+          source .venv/bin/activate
+
+          python3 -m pip install poetry
+          python3 -m poetry install --with test 
       - name: Test
-        run: python3 -m pytest
+        run: |-
+          source .venv/bin/activate
+          # which python3
+          # python3 -m pip list 
+          python3 -m pytest
+
       - name: Verify Build.
         run: |-
+          source .venv/bin/activate
+          python3 -m poetry install --with ci
           python3 -m build
           python3 -m twine check dist/*
diff --git a/poetry.lock b/poetry.lock
index 826c722..619b7f5 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -45,6 +45,31 @@ files = [
 docs = ["furo", "jaraco.packaging (>=9.3)", "rst.linker (>=1.9)", "sphinx (>=3.5)", "sphinx-lint"]
 testing = ["jaraco.test", "pytest (!=8.0.*)", "pytest (>=6,!=8.1.*)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=2.2)"]
 
+[[package]]
+name = "build"
+version = "1.2.1"
+description = "A simple, correct Python build frontend"
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "build-1.2.1-py3-none-any.whl", hash = "sha256:75e10f767a433d9a86e50d83f418e83efc18ede923ee5ff7df93b6cb0306c5d4"},
+    {file = "build-1.2.1.tar.gz", hash = "sha256:526263f4870c26f26c433545579475377b2b7588b6f1eac76a001e873ae3e19d"},
+]
+
+[package.dependencies]
+colorama = {version = "*", markers = "os_name == \"nt\""}
+importlib-metadata = {version = ">=4.6", markers = "python_full_version < \"3.10.2\""}
+packaging = ">=19.1"
+pyproject_hooks = "*"
+tomli = {version = ">=1.1.0", markers = "python_version < \"3.11\""}
+
+[package.extras]
+docs = ["furo (>=2023.08.17)", "sphinx (>=7.0,<8.0)", "sphinx-argparse-cli (>=1.5)", "sphinx-autodoc-typehints (>=1.10)", "sphinx-issues (>=3.0.0)"]
+test = ["build[uv,virtualenv]", "filelock (>=3)", "pytest (>=6.2.4)", "pytest-cov (>=2.12)", "pytest-mock (>=2)", "pytest-rerunfailures (>=9.1)", "pytest-xdist (>=1.34)", "setuptools (>=42.0.0)", "setuptools (>=56.0.0)", "setuptools (>=56.0.0)", "setuptools (>=67.8.0)", "wheel (>=0.36.0)"]
+typing = ["build[uv]", "importlib-metadata (>=5.1)", "mypy (>=1.9.0,<1.10.0)", "tomli", "typing-extensions (>=3.7.4.3)"]
+uv = ["uv (>=0.1.18)"]
+virtualenv = ["virtualenv (>=20.0.35)"]
+
 [[package]]
 name = "bumpver"
 version = "2023.1129"
@@ -1154,6 +1179,17 @@ files = [
 [package.extras]
 windows-terminal = ["colorama (>=0.4.6)"]
 
+[[package]]
+name = "pyproject-hooks"
+version = "1.1.0"
+description = "Wrappers to call pyproject.toml-based build backend hooks."
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "pyproject_hooks-1.1.0-py3-none-any.whl", hash = "sha256:7ceeefe9aec63a1064c18d939bdc3adf2d8aa1988a510afec15151578b232aa2"},
+    {file = "pyproject_hooks-1.1.0.tar.gz", hash = "sha256:4b37730834edbd6bd37f26ece6b44802fb1c1ee2ece0e54ddff8bfc06db86965"},
+]
+
 [[package]]
 name = "pytest"
 version = "8.2.2"
@@ -1806,4 +1842,4 @@ test = ["big-O", "importlib-resources", "jaraco.functools", "jaraco.itertools",
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.9"
-content-hash = "8e224e79328f494f2bcd551d2887cb0dc6ad6523bd9fd95ea22c9ff70d21f665"
+content-hash = "76abd8328794d6f42e21959a3c9c3c1f98757fc15237b306b1b7a3679cb09ec2"
diff --git a/pyproject.toml b/pyproject.toml
index a1e984b..960321d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,10 +72,12 @@ pytest-mypy-plugins = "^3.1.2"
 types-toml = "^0.10.8.20240310"
 bumpver = "^2023.1129"
 
-[tool.poetry.group.extras.dependencies]
+[tool.poetry.group.ci.dependencies]
 twine = "^5.1.1"
+build = "^1.2.1"
 
 [tool.poetry.group.test.dependencies]
+click = "^8.1.7"
 pytest = "^8.2.2"
 pytest-mypy = "^0.10.3"