diff --git a/poetry.lock b/poetry.lock
index 673272c..7f99910 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1025,7 +1025,7 @@ python-versions = "*"
 
 [[package]]
 name = "sphinx"
-version = "4.3.1"
+version = "5.0.0"
 description = "Python documentation generator"
 category = "dev"
 optional = false
@@ -1035,8 +1035,9 @@ python-versions = ">=3.6"
 alabaster = ">=0.7,<0.8"
 babel = ">=1.3"
 colorama = {version = ">=0.3.5", markers = "sys_platform == \"win32\""}
-docutils = ">=0.14,<0.18"
+docutils = ">=0.14,<0.19"
 imagesize = "*"
+importlib-metadata = {version = ">=4.4", markers = "python_version < \"3.10\""}
 Jinja2 = ">=2.3"
 packaging = "*"
 Pygments = ">=2.0"
@@ -1051,8 +1052,8 @@ sphinxcontrib-serializinghtml = ">=1.1.5"
 
 [package.extras]
 docs = ["sphinxcontrib-websupport"]
-lint = ["flake8 (>=3.5.0)", "isort", "mypy (>=0.900)", "docutils-stubs", "types-typed-ast", "types-pkg-resources", "types-requests"]
-test = ["pytest", "pytest-cov", "html5lib", "cython", "typed-ast"]
+lint = ["flake8 (>=3.5.0)", "isort", "mypy (>=0.950)", "docutils-stubs", "types-typed-ast", "types-requests"]
+test = ["pytest (>=4.6)", "html5lib", "cython", "typed-ast"]
 
 [[package]]
 name = "sphinx-autodoc-typehints"
@@ -1282,7 +1283,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6"
-content-hash = "58f42add1d8304d3155745c00202ada2209279b43e8b83ffd7c787b536c8dc4d"
+content-hash = "b6822786acc64fb67e8af257a10beaa6e7419d392a58eaef2ac146be9cde56de"
 
 [metadata.files]
 aiocontextvars = [
@@ -1863,8 +1864,8 @@ sortedcontainers = [
     {file = "sortedcontainers-2.4.0.tar.gz", hash = "sha256:25caa5a06cc30b6b83d11423433f65d1f9d76c4c6a0c90e3379eaa43b9bfdb88"},
 ]
 sphinx = [
-    {file = "Sphinx-4.3.1-py3-none-any.whl", hash = "sha256:048dac56039a5713f47a554589dc98a442b39226a2b9ed7f82797fcb2fe9253f"},
-    {file = "Sphinx-4.3.1.tar.gz", hash = "sha256:32a5b3e9a1b176cc25ed048557d4d3d01af635e6b76c5bc7a43b0a34447fbd45"},
+    {file = "Sphinx-5.0.0-py3-none-any.whl", hash = "sha256:af248b21e3282f847ff20feebe7a1985fb34773cbe3fc75bf206897f1a2199c4"},
+    {file = "Sphinx-5.0.0.tar.gz", hash = "sha256:464d9c1bd5613bcebe76b46658763f3f3dbb184da7406e632a84596d3cd8ee90"},
 ]
 sphinx-autodoc-typehints = [
     {file = "sphinx-autodoc-typehints-1.12.0.tar.gz", hash = "sha256:193617d9dbe0847281b1399d369e74e34cd959c82e02c7efde077fca908a9f52"},
diff --git a/pyproject.toml b/pyproject.toml
index f36313f..90c284f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ pytest = "^6.2"
 pytest-cov = "^3.0"
 pytest-randomly = "^3.10.3"
 
-sphinx = "^4.3.1"
+sphinx = "^5.0.0"
 sphinx-autodoc-typehints = "^1.12"
 doc8 = "^0.10"
 m2r2 = "^0.3"