diff --git a/docs/requirements.txt b/docs/requirements.txt
index a9ddeecfe57382..4e9ee816bb4da4 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,5 @@
 recommonmark==0.6.0
 # pin this to the last Py2 release
-Sphinx==1.8.5  # pyup: <2.0
+Sphinx==3.0.4  # pyup: <2.0
 sphinx-argparse==0.2.5
+pygments>=2.7.4 # not directly required, pinned by Snyk to avoid a vulnerability