diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index b2e5df7..5224f28 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -15,7 +15,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.9", "3.12"]
+        python-version: ["3.10", "3.13"]
 
     steps:
       - uses: actions/checkout@v4
diff --git a/pyproject.toml b/pyproject.toml
index c81ed76..f85819b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -67,7 +67,7 @@ dependencies = [
 ]
 
 [[tool.hatch.envs.test.matrix]]
-python = ["3.9", "3.10", "3.11", "3.12"]
+python = ["3.10", "3.11", "3.12", "3.13"]
 
 [tool.hatch.envs.test.scripts]
 run = "pytest {args}"
diff --git a/template/.gitignore b/template/.gitignore
index b2079ce..b90ccff 100644
--- a/template/.gitignore
+++ b/template/.gitignore
@@ -154,6 +154,7 @@ instance/
 
 # Sphinx documentation
 docs/_build/
+docs/api
 
 # PyBuilder
 .pybuilder/
diff --git a/template/pyproject.toml.jinja b/template/pyproject.toml.jinja
index 3614b07..da7c8eb 100644
--- a/template/pyproject.toml.jinja
+++ b/template/pyproject.toml.jinja
@@ -23,7 +23,7 @@ authors = [
 ]
 license = "{{ license }}"
 readme = {"file" = "README.md", "content-type" = "text/markdown"}
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 # Please consult https://pypi.org/classifiers/ for a full list.
 classifiers = [
     "Development Status :: 2 - Pre-Alpha",
@@ -38,10 +38,10 @@ classifiers = [
     "Natural Language :: English",
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3 :: Only",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Topic :: Scientific/Engineering",
     {%- if use_types %}
     "Typing :: Typed",
@@ -126,11 +126,14 @@ ignore = [
     "ANN101",  # 'Missing type annotation for {self} in method'.
     "ANN102",  # 'Missing type annotation for {cls} in classmethod'.
 ]
-{%- if use_vcs_version %}
 exclude = [
+{%- if use_vcs_version %}
     "src/{{ package_name }}/_version.py",
-]
 {%- endif %}
+{%- if documentation == "sphinx" %}
+    "docs/conf.py",
+{%- endif %}
+]
 
 [tool.ruff.lint.extend-per-file-ignores]
 "__init__.py" = [
@@ -231,13 +234,22 @@ extra-dependencies = [
     "mkdocs-awesome-pages-plugin ~=2.9",
 ]
 {%- elif documentation == "sphinx" %}
+dependencies = [
+    "pydata_sphinx_theme ~=0.16",
+    "myst-parser ~=4.0",
+    "Sphinx ~=8.0",
+    "sphinx-autobuild ==2024.10.3"
+]
 {%- endif %}
 
 [tool.hatch.envs.docs.scripts]
 {%- if documentation == "mkdocs" %}
 build = "mkdocs build {args:--clean --strict}"
 serve = "mkdocs serve {args}"
-{%- elif documentation == "sphinx" %}
+{%- endif %}
+{%- if documentation == "sphinx" %}
+build = ["sphinx-apidoc -o docs/api src/{{ package_name}}", "sphinx-build {args:-W -b html docs docs/_build}"]
+serve = ["sphinx-apidoc -o docs/api src/{{ package_name}}", "sphinx-autobuild docs --watch src/{{ package_name }} {args:-b html docs/_build/serve}"]
 {%- endif %}
 {%- endif %}
 
@@ -268,7 +280,7 @@ extra-dependencies = [
 ]
 
 [[tool.hatch.envs.test.matrix]]
-python = ["3.9", "3.12"]
+python = ["3.10", "3.13"]
 
 [tool.hatch.envs.test.scripts]
 run = "pytest {args:--cov={{ package_name }} --cov-report=term-missing}"
diff --git a/template/{% if dev_platform == 'GitHub' %}.github{% endif %}/workflows/test.yml.jinja b/template/{% if dev_platform == 'GitHub' %}.github{% endif %}/workflows/test.yml.jinja
index 2daf345..7542bb3 100644
--- a/template/{% if dev_platform == 'GitHub' %}.github{% endif %}/workflows/test.yml.jinja	
+++ b/template/{% if dev_platform == 'GitHub' %}.github{% endif %}/workflows/test.yml.jinja	
@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.12"]
+        python-version: ["3.10"]
 
     steps:
       - uses: actions/checkout@v4
@@ -46,7 +46,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.9", "3.12"]
+        python-version: ["3.10", "3.13"]
 
     steps:
     - uses: actions/checkout@v4
diff --git a/template/{% if documentation != '' %}.readthedocs.yaml{% endif %}.jinja b/template/{% if documentation != '' %}.readthedocs.yaml{% endif %}.jinja
index 3a35a84..7e7f3dc 100644
--- a/template/{% if documentation != '' %}.readthedocs.yaml{% endif %}.jinja	
+++ b/template/{% if documentation != '' %}.readthedocs.yaml{% endif %}.jinja	
@@ -15,4 +15,5 @@ build:
 mkdocs:
   configuration: mkdocs.yml
 {%- elif documentation == "sphinx" %}
+    - hatch run docs:build
 {%- endif %}
diff --git a/template/{% if documentation == 'sphinx' %}docs{% endif %}/conf.py.jinja b/template/{% if documentation == 'sphinx' %}docs{% endif %}/conf.py.jinja
new file mode 100644
index 0000000..34364e8
--- /dev/null
+++ b/template/{% if documentation == 'sphinx' %}docs{% endif %}/conf.py.jinja	
@@ -0,0 +1,96 @@
+#
+# {{ project_name }} documentation build configuration file
+#
+import importlib.metadata
+
+# -- General configuration -----------------------------------------------------
+
+# Add any Sphinx extension module names here, as strings. They can be extensions
+# coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
+extensions = [
+    "myst_parser",
+    "sphinx.ext.intersphinx",
+    "sphinx.ext.autodoc",
+]
+
+# The suffix of source filenames.
+source_suffix = ".rst"
+
+# The master toctree document.
+master_doc = "index"
+
+# General information about the project.
+project = "{{ project_name }}"
+copyright = "Copyright © {{ year }} {{ copyright_holder }}"
+html_show_sphinx = False
+
+# The version info for the project you're documenting, acts as replacement for
+# |version| and |release|, also used in various other places throughout the
+# built documents.
+version = importlib.metadata.version("{{ package_name }}")
+
+# The name of the Pygments (syntax highlighting) style to use.
+pygments_style = "default"
+
+# The language for content autogenerated by Sphinx. Refer to documentation
+# for a list of supported languages.
+#
+# This is also used if you do content translation via gettext catalogs.
+# Usually you set "language" from the command line for these cases.
+language = "en"
+
+# -- Options for extensions ----------------------------------------------------
+# https://myst-parser.readthedocs.io/en/latest/syntax/optional.html
+myst_enable_extensions = ["html_image"]
+
+
+# -- Options for HTML output ---------------------------------------------------
+
+html_theme = "pydata_sphinx_theme"
+
+# The name for this set of Sphinx documents.  If None, it defaults to
+# "<project> v<release> documentation".
+# html_title = None
+
+# A shorter title for the navigation bar.  Default is the same as html_title.
+# html_short_title = None
+
+# The name of an image file (relative to this directory) to place at the top
+# of the sidebar.
+# html_logo = None
+
+# The name of an image file (within the static path) to use as favicon of the
+# docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
+# pixels large.
+# html_favicon = None
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+# html_static_path = ['_static']
+
+# Custom sidebar templates, maps document names to template names.
+# html_sidebars = {}
+
+# Additional templates that should be rendered to pages, maps page names to
+# template names.
+# html_additional_pages = {}
+
+# If true, links to the reST sources are added to the pages.
+# html_show_sourcelink = True
+
+# If true, an OpenSearch description file will be output, and all pages will
+# contain a <link> tag referring to it.  The value of this option must be the
+# base URL from which the finished HTML is served.
+# html_use_opensearch = ''
+
+# If nonempty, this is the file name suffix for HTML files (e.g. ".xhtml").
+# html_file_suffix = ''
+
+# Output file base name for HTML help builder.
+htmlhelp_basename = "{{ project_name }}_doc"
+
+
+intersphinx_mapping = {
+    "python": ("https://docs.python.org/", None),
+}
diff --git a/template/{% if documentation == 'sphinx' %}docs{% endif %}/index.md.jinja b/template/{% if documentation == 'sphinx' %}docs{% endif %}/index.md.jinja
new file mode 100644
index 0000000..b449557
--- /dev/null
+++ b/template/{% if documentation == 'sphinx' %}docs{% endif %}/index.md.jinja	
@@ -0,0 +1,25 @@
+# {{ project_name }}
+
+## Overview
+
+{{ package_description }}
+
+[API Documentation](./api/modules.rst)
+
+## Copyright
+{% if license == "MIT" %}
+- Copyright © {{ year }} {{ copyright_holder }}.
+- Free software distributed under the MIT License.
+{% elif license == "BSD-3-Clause" %}
+- Copyright © {{ year }} {{ copyright_holder }}.
+- Free software distributed under the 3-Clause BSD License.
+{% elif license == "Apache-2.0" %}
+- Copyright © {{ year }} {{ copyright_holder }}.
+- Free software distributed under the Apache Software License 2.0.
+{% endif %}
+
+
+```{toctree}
+:hidden:
+./api/modules.rst
+```
diff --git a/template/{% if documentation == 'sphinx' %}docs{% endif %}/index.rst.jinja b/template/{% if documentation == 'sphinx' %}docs{% endif %}/index.rst.jinja
deleted file mode 100644
index 0647e9e..0000000
--- a/template/{% if documentation == 'sphinx' %}docs{% endif %}/index.rst.jinja	
+++ /dev/null
@@ -1,17 +0,0 @@
-{{ project_name }}
-========================================================================================
-
-{{ package_description }}
-
-Copyright
----------
-{% if license == "MIT" %}
-- Copyright © {{ year }} {{ copyright_holder }}.
-- Free software distributed under the [MIT License](../LICENSE).
-{% elif license == "BSD-3-Clause" %}
-- Copyright © {{ year }} {{ copyright_holder }}.
-- Free software distributed under the [3-Clause BSD License](../LICENSE).
-{% elif license == "Apache-2.0" %}
-- Copyright © {{ year }} {{ copyright_holder }}.
-- Free software distributed under the [Apache Software License 2.0](../LICENSE).
-{% endif %}
diff --git a/tests/test_template_init.py b/tests/test_template_init.py
index aefd953..fd0210b 100644
--- a/tests/test_template_init.py
+++ b/tests/test_template_init.py
@@ -49,6 +49,15 @@ def license(request: pytest.FixtureRequest) -> str:
     return request.param
 
 
+@pytest.fixture(
+    scope="module",
+    params=["mkdocs", "sphinx", ""],
+)
+def documentation(request: pytest.FixtureRequest) -> str:
+    """Provide a documentation option."""
+    return request.param
+
+
 @pytest.fixture
 def destination_path(
     tmp_path_factory: pytest.TempPathFactory,
@@ -71,7 +80,6 @@ def answers() -> dict[str, str]:
         "package_name": "alien_clones",
         "package_description": "Wubba Lubba Dub-Dub",
         "username": "rickprime",
-        "documentation": "mkdocs",
         "year": str(today.year),
     }
 
@@ -81,6 +89,7 @@ def test_init_template(
     answers: dict[str, str],
     dev_platform: str,
     license: str,
+    documentation: str,
 ) -> None:
     """Expect that the template can be initialized with any provided license."""
     parent = destination_path / license / answers["project_slug"]
@@ -92,6 +101,7 @@ def test_init_template(
             **answers,
             "dev_platform": dev_platform,
             "license": license,
+            "documentation": documentation,
         },
         defaults=True,
     )
@@ -111,6 +121,7 @@ def test_template_suite(
     destination_path: Path,
     dev_platform: str,
     answers: dict[str, str],
+    documentation: str,
 ) -> None:
     """Expect that the test suite passes for the initialized template."""
     parent = destination_path / answers["project_slug"]
@@ -122,6 +133,7 @@ def test_template_suite(
             **answers,
             "dev_platform": dev_platform,
             "license": "MIT",
+            "documentation": documentation,
         },
         defaults=True,
     )
@@ -152,12 +164,13 @@ def test_template_suite(
             check=True,
             shell=True,
         )
-        subprocess.run(
-            "hatch run docs:build",
-            cwd=project_dir,
-            check=True,
-            shell=True,
-        )
+        if documentation:
+            subprocess.run(
+                "hatch run docs:build",
+                cwd=project_dir,
+                check=True,
+                shell=True,
+            )
         subprocess.run(
             "hatch run style:check",
             cwd=project_dir,