diff --git a/docs/requirements.txt b/docs/requirements.txt
index 0b7aaf92..f86f2ee3 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -3,5 +3,5 @@ numpy>=1.9
 
 # Note: beware of https://github.com/readthedocs/sphinx_rtd_theme/issues/1115
 # and broken behavior with docutils 0.17
-sphinx_rtd_theme>=1
-sphinx=5.3.0
+Sphinx==4.5.0
+docutils<0.17