diff --git a/doc/doc_requirements.txt b/doc/doc_requirements.txt
index 23186a2..804c17d 100644
--- a/doc/doc_requirements.txt
+++ b/doc/doc_requirements.txt
@@ -8,7 +8,7 @@ imagesize==1.1.0
 Jinja2==2.11.3
 MarkupSafe==1.1.1
 packaging==19.2
-Pygments==2.7.4
+Pygments==2.15.0
 pyparsing==2.4.2
 pytz==2019.2
 requests==2.22.0