diff --git a/poetry.lock b/poetry.lock
index 8d52007..a4cc829 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -808,26 +808,26 @@ files = [
 
 [[package]]
 name = "sphinx"
-version = "5.3.0"
+version = "6.2.1"
 description = "Python documentation generator"
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.8"
 files = [
-    {file = "Sphinx-5.3.0.tar.gz", hash = "sha256:51026de0a9ff9fc13c05d74913ad66047e104f56a129ff73e174eb5c3ee794b5"},
-    {file = "sphinx-5.3.0-py3-none-any.whl", hash = "sha256:060ca5c9f7ba57a08a1219e547b269fadf125ae25b06b9fa7f66768efb652d6d"},
+    {file = "Sphinx-6.2.1.tar.gz", hash = "sha256:6d56a34697bb749ffa0152feafc4b19836c755d90a7c59b72bc7dfd371b9cc6b"},
+    {file = "sphinx-6.2.1-py3-none-any.whl", hash = "sha256:97787ff1fa3256a3eef9eda523a63dbf299f7b47e053cfcf684a1c2a8380c912"},
 ]
 
 [package.dependencies]
 alabaster = ">=0.7,<0.8"
 babel = ">=2.9"
 colorama = {version = ">=0.4.5", markers = "sys_platform == \"win32\""}
-docutils = ">=0.14,<0.20"
+docutils = ">=0.18.1,<0.20"
 imagesize = ">=1.3"
 importlib-metadata = {version = ">=4.8", markers = "python_version < \"3.10\""}
 Jinja2 = ">=3.0"
 packaging = ">=21.0"
-Pygments = ">=2.12"
-requests = ">=2.5.0"
+Pygments = ">=2.13"
+requests = ">=2.25.0"
 snowballstemmer = ">=2.0"
 sphinxcontrib-applehelp = "*"
 sphinxcontrib-devhelp = "*"
@@ -838,8 +838,8 @@ sphinxcontrib-serializinghtml = ">=1.1.5"
 
 [package.extras]
 docs = ["sphinxcontrib-websupport"]
-lint = ["docutils-stubs", "flake8 (>=3.5.0)", "flake8-bugbear", "flake8-comprehensions", "flake8-simplify", "isort", "mypy (>=0.981)", "sphinx-lint", "types-requests", "types-typed-ast"]
-test = ["cython", "html5lib", "pytest (>=4.6)", "typed_ast"]
+lint = ["docutils-stubs", "flake8 (>=3.5.0)", "flake8-simplify", "isort", "mypy (>=0.990)", "ruff", "sphinx-lint", "types-requests"]
+test = ["cython", "filelock", "html5lib", "pytest (>=4.6)"]
 
 [[package]]
 name = "sphinx-rtd-theme"
@@ -1033,4 +1033,4 @@ test = ["big-O", "importlib-resources", "jaraco.functools", "jaraco.itertools",
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8"
-content-hash = "d8059f25eb372c1e7f21118c1276bbc9a0214347675b6aea39841e30a9bf096b"
+content-hash = "5fe4ad8136e06b79862b37153d96f471c12f4608ca1e36b03b1362800433e99e"
diff --git a/pyproject.toml b/pyproject.toml
index b9d4bb3..0e75713 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,7 +37,7 @@ python = "^3.8"
 # duplicated in docs/requirements.txt for readthedocs compatibility
 [tool.poetry.group.docs.dependencies]
 myst-parser = ">=0.18,<1.1"
-sphinx = "^5.1.1"
+sphinx = ">=5.1.1,<7.0.0"
 sphinx-rtd-theme = ">=1,<3"
 sphinxcontrib-asyncio = "^0.3.0"
 sphinxcontrib-fulltoc = "^1.2.0"