diff --git a/poetry.lock b/poetry.lock
index 9c50e206..d5ae8392 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1086,18 +1086,18 @@ test = ["cython", "filelock", "html5lib", "pytest (>=4.6)"]
 
 [[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]
@@ -1419,4 +1419,4 @@ testing = ["big-O", "jaraco.functools", "jaraco.itertools", "jaraco.test", "more
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8"
-content-hash = "1af9b7f71a1cd7a9ef2f6f2d1812abc91dfe21a7f5cc65e721e95774ef28207a"
+content-hash = "3dc808e69e99b851076e73eb415793fc4c2a4142242d09722788e3df12012d0d"
diff --git a/pyproject.toml b/pyproject.toml
index 4f08f481..5f482681 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,7 +37,7 @@ mypy = "^1.4.1"
 coveralls = "^3.3.1"
 responses = ">=0.23.2,<0.26.0"
 bump2version = "^1.0.1"
-sphinx-rtd-theme = "^1.2.2"
+sphinx-rtd-theme = ">=1.2.2,<3.0.0"
 sphinx = ">=6,<8"
 importlib-metadata = ">=6.8,<8.0"