diff --git a/ci-constraints-requirements.txt b/ci-constraints-requirements.txt
index 2d0d8c0ea798..c4b698127a83 100644
--- a/ci-constraints-requirements.txt
+++ b/ci-constraints-requirements.txt
@@ -120,7 +120,7 @@ sphinx==7.4.7
     #   sphinxcontrib-qthelp
     #   sphinxcontrib-serializinghtml
     #   sphinxcontrib-spelling
-sphinx-rtd-theme==2.0.0
+sphinx-rtd-theme==3.0.0rc1
     # via cryptography (pyproject.toml)
 sphinxcontrib-applehelp==2.0.0
     # via sphinx
diff --git a/pyproject.toml b/pyproject.toml
index 2f7558d3383f..459196c8ddbd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -74,7 +74,7 @@ test = [
     "certifi",
 ]
 test-randomorder = ["pytest-randomly"]
-docs = ["sphinx >=5.3.0", "sphinx-rtd-theme >=1.1.1"]
+docs = ["sphinx >=5.3.0", "sphinx-rtd-theme >=3.0.0rc1"]
 docstest = ["pyenchant >=1.6.11", "readme-renderer", "sphinxcontrib-spelling >=4.0.1"]
 sdist = ["build"]
 # `click` included because its needed to type check `release.py`