diff --git a/docs/requirements.txt b/docs/requirements.txt
index 80411408149fb..5a3c5928bf82d 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,5 +1,7 @@
 breathe
 ipython
 numpydoc
-sphinx==2.4.4
+sphinx==3.3.0
 sphinx_rtd_theme
+requests>=2.32.0 # not directly required, pinned by Snyk to avoid a vulnerability
+setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability