diff --git a/docs/requirements.txt b/docs/requirements.txt
index e932137..257aa63 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,10 +1,7 @@
 autoapi
 ipython
 matplotlib
-# Remove sphinx from requirements b/c it lead to issues
-# on rtd and it's a dependency of the rtd theme anyway.
-# sphinx>=1.6.4,<2
+sphinx==4.3.0
 sphinxcontrib.bibtex>=2.0
-sphinx_rtd_theme
-# https://github.com/readthedocs/sphinx_rtd_theme/issues/1115
-docutils==0.16
\ No newline at end of file
+sphinx_rtd_theme==1.0
+