diff --git a/docs/conf.py b/docs/conf.py
index 7fbfe3441a1..0da9558c1ac 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -124,7 +124,7 @@
 pygments_style = 'sphinx'
 
 # The default language to highlight source code in.
-highlight_language = 'python'
+highlight_language = 'python3'
 
 # A list of ignored prefixes for module index sorting.
 # modindex_common_prefix = []
diff --git a/requirements-ci.txt b/requirements-ci.txt
index c1514d3f141..1aa7bde71cc 100644
--- a/requirements-ci.txt
+++ b/requirements-ci.txt
@@ -11,5 +11,5 @@ sphinxcontrib-newsfeed
 pytest
 pytest-cov
 gunicorn
-pygments
+pygments>=2.1
 -e .