diff --git a/docsrc/requirements.txt b/docsrc/requirements.txt
index dab372a..6b17625 100644
--- a/docsrc/requirements.txt
+++ b/docsrc/requirements.txt
@@ -11,7 +11,7 @@ m2r==0.2.1
 MarkupSafe==1.1.1
 mistune==0.8.4
 packaging==19.2
-Pygments==2.5.2
+Pygments==2.7.4
 pyparsing==2.4.5
 pytz==2019.3
 requests==2.22.0