diff --git a/requirements/docs.txt b/requirements/docs.txt
index 34723e6ea0..7d52c1cb3e 100644
--- a/requirements/docs.txt
+++ b/requirements/docs.txt
@@ -1,5 +1,5 @@
 sphinx>=5.3,<9
-sphinx_rtd_theme>=2,<3
+sphinx_rtd_theme>=2,<4
 readthedocs-sphinx-search~=0.3
 sphinxcontrib-shellcheck>=1,<2
 sphinx-autobuild>=2020.9.1