diff --git a/poetry.lock b/poetry.lock
index c43599c..08eb5d3 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -678,7 +678,7 @@ python-versions = "*"
 
 [[package]]
 name = "sphinx"
-version = "4.1.1"
+version = "5.0.2"
 description = "Python documentation generator"
 category = "dev"
 optional = false
@@ -688,8 +688,9 @@ 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"
@@ -704,8 +705,8 @@ 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-autoapi"
@@ -922,7 +923,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6"
-content-hash = "fd3e4e410861a5c5b2380fea822dfe813ba90c47dd1d1730de8b755405de28bd"
+content-hash = "3bb0117ce43ac9587e51469dd6dfb688b9aa4b785ca840e6fb2e267fb059bd22"
 
 [metadata.files]
 alabaster = [
@@ -1440,8 +1441,8 @@ snowballstemmer = [
     {file = "snowballstemmer-2.1.0.tar.gz", hash = "sha256:e997baa4f2e9139951b6f4c631bad912dfd3c792467e2f03d7239464af90e914"},
 ]
 sphinx = [
-    {file = "Sphinx-4.1.1-py3-none-any.whl", hash = "sha256:3d513088236eef51e5b0adb78b0492eb22cc3b8ccdb0b36dd021173b365d4454"},
-    {file = "Sphinx-4.1.1.tar.gz", hash = "sha256:23c846a1841af998cb736218539bb86d16f5eb95f5760b1966abcd2d584e62b8"},
+    {file = "Sphinx-5.0.2-py3-none-any.whl", hash = "sha256:d3e57663eed1d7c5c50895d191fdeda0b54ded6f44d5621b50709466c338d1e8"},
+    {file = "Sphinx-5.0.2.tar.gz", hash = "sha256:b18e978ea7565720f26019c702cd85c84376e948370f1cd43d60265010e1c7b0"},
 ]
 sphinx-autoapi = [
     {file = "sphinx-autoapi-1.8.4.tar.gz", hash = "sha256:8c4ec5fbedc1e6e8f4692bcc4fcd1abcfb9e8dfca8a4ded60ad811a743c22ccc"},
diff --git a/pyproject.toml b/pyproject.toml
index 22233e3..b65f044 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ black = {version = "^20.8b1",allow-prereleases = true}
 pytest-cov = "^2.11.1"
 jsonschema = "^3.2.0"
 pylint = "^2.10.2"
-sphinx = "^4.1.1"
+sphinx = "^5.0.2"
 sphinx-autoapi = "^1.8.4"
 sphinx-rtd-theme = "^0.5.2"
 mypy = "^0.812"