diff --git a/poetry.lock b/poetry.lock
index 643e5680..8d520079 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -843,18 +843,18 @@ test = ["cython", "html5lib", "pytest (>=4.6)", "typed_ast"]
 
 [[package]]
 name = "sphinx-rtd-theme"
-version = "1.3.0"
+version = "2.0.0"
 description = "Read the Docs theme for Sphinx"
 optional = false
-python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,>=2.7"
+python-versions = ">=3.6"
 files = [
-    {file = "sphinx_rtd_theme-1.3.0-py2.py3-none-any.whl", hash = "sha256:46ddef89cc2416a81ecfbeaceab1881948c014b1b6e4450b815311a89fb977b0"},
-    {file = "sphinx_rtd_theme-1.3.0.tar.gz", hash = "sha256:590b030c7abb9cf038ec053b95e5380b5c70d61591eb0b552063fbe7c41f0931"},
+    {file = "sphinx_rtd_theme-2.0.0-py2.py3-none-any.whl", hash = "sha256:ec93d0856dc280cf3aee9a4c9807c60e027c7f7b461b77aeffed682e68f0e586"},
+    {file = "sphinx_rtd_theme-2.0.0.tar.gz", hash = "sha256:bd5d7b80622406762073a04ef8fadc5f9151261563d47027de09910ce03afe6b"},
 ]
 
 [package.dependencies]
-docutils = "<0.19"
-sphinx = ">=1.6,<8"
+docutils = "<0.21"
+sphinx = ">=5,<8"
 sphinxcontrib-jquery = ">=4,<5"
 
 [package.extras]
@@ -1033,4 +1033,4 @@ test = ["big-O", "importlib-resources", "jaraco.functools", "jaraco.itertools",
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8"
-content-hash = "004250cfdaf5e4ebddad99cfa7c6382ad6e537e572e24f62bcb0f42676b0e232"
+content-hash = "d8059f25eb372c1e7f21118c1276bbc9a0214347675b6aea39841e30a9bf096b"
diff --git a/pyproject.toml b/pyproject.toml
index 7b70797e..b9d4bb3f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ python = "^3.8"
 [tool.poetry.group.docs.dependencies]
 myst-parser = ">=0.18,<1.1"
 sphinx = "^5.1.1"
-sphinx-rtd-theme = "^1.0.0"
+sphinx-rtd-theme = ">=1,<3"
 sphinxcontrib-asyncio = "^0.3.0"
 sphinxcontrib-fulltoc = "^1.2.0"