diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 43f3f97..b2e2a39 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -32,3 +32,22 @@ jobs:
 
       - name: Run tests
         run: python -m tox -e py -- --verbose
+
+  docs:
+    # Test documentation builds.
+    # This environment mirrors the ReadTheDocs build environment.
+    name: Docs
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python ${{ matrix.python }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.12"
+
+      - name: Install tox
+        run: python -m pip install tox
+
+      - name: Run tests
+        run: python -m tox -e docs
diff --git a/.gitignore b/.gitignore
index 8fe10f2..61f7a75 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,4 +13,5 @@ MANIFEST
 
 # Hidden files.
 .*
+!.readthedocs.yaml
 !.gitignore
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
new file mode 100644
index 0000000..40aafd3
--- /dev/null
+++ b/.readthedocs.yaml
@@ -0,0 +1,14 @@
+version: 2
+
+build:
+  os: 'ubuntu-22.04'
+  tools:
+    python: '3.12'
+
+sphinx:
+  configuration: 'doc/source/conf.py'
+  fail_on_warning: true
+
+python:
+  install:
+    - requirements: 'doc/requirements.txt'
diff --git a/doc/requirements.txt b/doc/requirements.txt
new file mode 100644
index 0000000..6fc994d
--- /dev/null
+++ b/doc/requirements.txt
@@ -0,0 +1 @@
+Sphinx==7.2.6
diff --git a/doc/source/api.rst b/doc/source/api.rst
index 0fb44b8..c62961b 100644
--- a/doc/source/api.rst
+++ b/doc/source/api.rst
@@ -1,3 +1,4 @@
+:tocdepth: 2
 
 API
 ===
diff --git a/doc/source/conf.py b/doc/source/conf.py
index e8c0b53..3e5ef46 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -24,15 +24,15 @@
 
 # -- General configuration ------------------------------------------------
 
-# If your documentation needs a minimal Sphinx version, state it here.
-#
-needs_sphinx = '1.2'
-
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = ['sphinx.ext.autodoc', 'sphinx.ext.intersphinx', 'sphinx.ext.viewcode']
 
+# The autodoc extension doesn't understand the `Self` typehint.
+# To avoid documentation build errors, autodoc typehints must be disabled.
+autodoc_typehints = "none"
+
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
 
@@ -64,7 +64,7 @@
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+language = "en"
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
@@ -102,7 +102,7 @@
 # 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']
+# html_static_path = ['_static']
 
 # Custom sidebar templates, must be a dictionary that maps document names
 # to template names.
@@ -165,4 +165,4 @@
 ]
 
 # Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {'https://docs.python.org/': None}
+intersphinx_mapping = {'python': ('https://docs.python.org/3', None)}
diff --git a/doc/source/index.rst b/doc/source/index.rst
index 8437bec..6649eab 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -9,6 +9,7 @@ Welcome to pathspec's documentation!
 
 .. toctree::
    :caption: Contents:
+   :maxdepth: 2
 
    readme
    api
diff --git a/pathspec/gitignore.py b/pathspec/gitignore.py
index 81bf303..e5f7d48 100644
--- a/pathspec/gitignore.py
+++ b/pathspec/gitignore.py
@@ -31,14 +31,14 @@
 
 class GitIgnoreSpec(PathSpec):
 	"""
-	The :class:`GitIgnoreSpec` class extends :class:`PathSpec` to
+	The :class:`GitIgnoreSpec` class extends :class:`pathspec.pathspec.PathSpec` to
 	replicate *.gitignore* behavior.
 	"""
 
 	def __eq__(self, other: object) -> bool:
 		"""
-		Tests the equality of this gitignore-spec with *other*
-		(:class:`GitIgnoreSpec`) by comparing their :attr:`~PathSpec.patterns`
+		Tests the equality of this gitignore-spec with *other* (:class:`GitIgnoreSpec`)
+		by comparing their :attr:`~pathspec.pattern.Pattern`
 		attributes. A non-:class:`GitIgnoreSpec` will not compare equal.
 		"""
 		if isinstance(other, GitIgnoreSpec):
@@ -65,7 +65,8 @@ def from_lines(
 		*pattern_factory* can be :data:`None`, the name of a registered
 		pattern factory (:class:`str`), or a :class:`~collections.abc.Callable`
 		used to compile patterns. The callable must accept an uncompiled
-		pattern (:class:`str`) and return the compiled pattern (:class:`.Pattern`).
+		pattern (:class:`str`) and return the compiled pattern
+		(:class:`pathspec.pattern.Pattern`).
 		Default is :data:`None` for :class:`.GitWildMatchPattern`).
 
 		Returns the :class:`GitIgnoreSpec` instance.
diff --git a/pathspec/pathspec.py b/pathspec/pathspec.py
index 93f2f60..9153baa 100644
--- a/pathspec/pathspec.py
+++ b/pathspec/pathspec.py
@@ -137,7 +137,7 @@ def match_entries(
 		"""
 		Matches the entries to this path-spec.
 
-		*entries* (:class:`~collections.abc.Iterable` of :class:`~util.TreeEntry`)
+		*entries* (:class:`~collections.abc.Iterable` of :class:`~pathspec.util.TreeEntry`)
 		contains the entries to be matched against :attr:`self.patterns <PathSpec.patterns>`.
 
 		*separators* (:class:`~collections.abc.Collection` of :class:`str`; or
@@ -150,7 +150,7 @@ def match_entries(
 		:data:`False`.
 
 		Returns the matched entries (:class:`~collections.abc.Iterator` of
-		:class:`~util.TreeEntry`).
+		:class:`~pathspec.util.TreeEntry`).
 		"""
 		if not _is_iterable(entries):
 			raise TypeError(f"entries:{entries!r} is not an iterable.")
@@ -179,7 +179,7 @@ def match_file(
 		"""
 		Matches the file to this path-spec.
 
-		*file* (:class:`str` or :class:`os.PathLike[str]`) is the file path to be
+		*file* (:class:`str` or :class:`os.PathLike`) is the file path to be
 		matched against :attr:`self.patterns <PathSpec.patterns>`.
 
 		*separators* (:class:`~collections.abc.Collection` of :class:`str`)
@@ -202,7 +202,7 @@ def match_files(
 		Matches the files to this path-spec.
 
 		*files* (:class:`~collections.abc.Iterable` of :class:`str` or
-		:class:`os.PathLike[str]`) contains the file paths to be matched against
+		:class:`os.PathLike`) contains the file paths to be matched against
 		:attr:`self.patterns <PathSpec.patterns>`.
 
 		*separators* (:class:`~collections.abc.Collection` of :class:`str`; or
@@ -215,7 +215,7 @@ def match_files(
 		:data:`False`.
 
 		Returns the matched files (:class:`~collections.abc.Iterator` of
-		:class:`str` or :class:`os.PathLike[str]`).
+		:class:`str` or :class:`os.PathLike`).
 		"""
 		if not _is_iterable(files):
 			raise TypeError(f"files:{files!r} is not an iterable.")
@@ -243,7 +243,7 @@ def match_tree_entries(
 		Walks the specified root path for all files and matches them to this
 		path-spec.
 
-		*root* (:class:`str` or :class:`os.PathLike[str]`) is the root directory to
+		*root* (:class:`str` or :class:`os.PathLike`) is the root directory to
 		search.
 
 		*on_error* (:class:`~collections.abc.Callable` or :data:`None`) optionally
@@ -277,7 +277,7 @@ def match_tree_files(
 		Walks the specified root path for all files and matches them to this
 		path-spec.
 
-		*root* (:class:`str` or :class:`os.PathLike[str]`) is the root directory to
+		*root* (:class:`str` or :class:`os.PathLike`) is the root directory to
 		search for files.
 
 		*on_error* (:class:`~collections.abc.Callable` or :data:`None`) optionally
diff --git a/pathspec/pattern.py b/pathspec/pattern.py
index 5222ec0..8f20e73 100644
--- a/pathspec/pattern.py
+++ b/pathspec/pattern.py
@@ -51,7 +51,7 @@ def match(self, files: Iterable[str]) -> Iterator[str]:
 
 		*files* (:class:`~collections.abc.Iterable` of :class:`str`)
 		contains each file relative to the root directory (e.g.,
-		:data:`"relative/path/to/file"`).
+		``"relative/path/to/file"``).
 
 		Returns an :class:`~collections.abc.Iterable` yielding each matched
 		file path (:class:`str`).
@@ -160,7 +160,7 @@ def match_file(self, file: str) -> Optional['RegexMatchResult']:
 		*file* (:class:`str`)
 		contains each file relative to the root directory (e.g., "relative/path/to/file").
 
-		Returns the match result (:class:`RegexMatchResult`) if *file*
+		Returns the match result (:class:`.RegexMatchResult`) if *file*
 		matched; otherwise, :data:`None`.
 		"""
 		if self.include is not None:
diff --git a/pathspec/util.py b/pathspec/util.py
index 969e3bc..9408f25 100644
--- a/pathspec/util.py
+++ b/pathspec/util.py
@@ -62,7 +62,7 @@ def append_dir_sep(path: pathlib.Path) -> str:
 	files on the file-system by relying on the presence of a trailing path
 	separator.
 
-	*path* (:class:`pathlib.path`) is the path to use.
+	*path* (:class:`pathlib.Path`) is the path to use.
 
 	Returns the path (:class:`str`).
 	"""
@@ -88,7 +88,7 @@ def detailed_match_files(
 	*files* (:class:`~collections.abc.Iterable` of :class:`str`) contains
 	the normalized file paths to be matched against *patterns*.
 
-	*all_matches* (:class:`boot` or :data:`None`) is whether to return all
+	*all_matches* (:class:`bool` or :data:`None`) is whether to return all
 	matches patterns (:data:`True`), or only the last matched pattern
 	(:data:`False`). Default is :data:`None` for :data:`False`.
 
@@ -154,7 +154,7 @@ def iter_tree_entries(
 	"""
 	Walks the specified directory for all files and directories.
 
-	*root* (:class:`str` or :class:`os.PathLike[str]`) is the root directory to
+	*root* (:class:`str` or :class:`os.PathLike`) is the root directory to
 	search.
 
 	*on_error* (:class:`~collections.abc.Callable` or :data:`None`)
@@ -270,7 +270,7 @@ def iter_tree_files(
 	"""
 	Walks the specified directory for all files.
 
-	*root* (:class:`str` or :class:`os.PathLike[str]`) is the root directory to
+	*root* (:class:`str` or :class:`os.PathLike`) is the root directory to
 	search for files.
 
 	*on_error* (:class:`~collections.abc.Callable` or :data:`None`)
@@ -376,16 +376,16 @@ def normalize_file(
 ) -> str:
 	"""
 	Normalizes the file path to use the POSIX path separator (i.e.,
-	:data:`'/'`), and make the paths relative (remove leading :data:`'/'`).
+	``"/"``), and make the paths relative (remove leading ``"/"``).
 
-	*file* (:class:`str` or :class:`os.PathLike[str]`) is the file path.
+	*file* (:class:`str` or :class:`os.PathLike`) is the file path.
 
 	*separators* (:class:`~collections.abc.Collection` of :class:`str`; or
-	:data:`None`) optionally contains the path separators to normalize.
-	This does not need to include the POSIX path separator (:data:`'/'`),
-	but including it will not affect the results. Default is :data:`None`
-	for :data:`NORMALIZE_PATH_SEPS`. To prevent normalization, pass an
-	empty container (e.g., an empty tuple :data:`()`).
+	``None``) optionally contains the path separators to normalize.
+	This does not need to include the POSIX path separator (``"/"``),
+	but including it will not affect the results. Default is ``None``
+	for ``NORMALIZE_PATH_SEPS``. To prevent normalization, pass an
+	empty container (e.g., an empty tuple ``()``).
 
 	Returns the normalized file path (:class:`str`).
 	"""
@@ -421,7 +421,7 @@ def normalize_files(
 	Normalizes the file paths to use the POSIX path separator.
 
 	*files* (:class:`~collections.abc.Iterable` of :class:`str` or
-	:class:`os.PathLike[str]`) contains the file paths to be normalized.
+	:class:`os.PathLike`) contains the file paths to be normalized.
 
 	*separators* (:class:`~collections.abc.Collection` of :class:`str`; or
 	:data:`None`) optionally contains the path separators to normalize.
@@ -429,7 +429,7 @@ def normalize_files(
 
 	Returns a :class:`dict` mapping each normalized file path (:class:`str`)
 	to the original file paths (:class:`list` of :class:`str` or
-	:class:`os.PathLike[str]`).
+	:class:`os.PathLike`).
 	"""
 	warnings.warn((
 		"util.normalize_files() is deprecated. Use util.normalize_file() "
diff --git a/tox.ini b/tox.ini
index 89f20bd..7d7a17c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,14 @@
 [tox]
-envlist = py38, py39, py310, py311, py312, pypy3
+envlist =
+    py{38, 39, 310, 311, 312}
+    pypy3
+    docs
 isolated_build = True
 
 [testenv]
 commands = python -m unittest {posargs}
+
+[testenv:docs]
+base_path = py312
+deps = -rdoc/requirements.txt
+commands = sphinx-build -aWEnqb html doc/source doc/build