diff --git a/requirements/docs.txt b/requirements/docs.txt
index 3a31942c..679f9747 100644
--- a/requirements/docs.txt
+++ b/requirements/docs.txt
@@ -1,6 +1,6 @@
 tornado
 aiohttp
 sphinx>=5.3,<8
-sphinx_rtd_theme>=2,<3
+sphinx_rtd_theme>=2,<4
 readthedocs-sphinx-search~=0.3
 furo==2024.8.6