diff --git a/docs/requirements.txt b/docs/requirements.txt
index fbd1ac71..66f60676 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -14,7 +14,7 @@ mistune==0.8.3
 packaging==17.1
 pdfrw==0.4
 Pillow==6.2.0
-Pygments==2.3.1
+Pygments==2.7.4
 pyparsing==2.2.0
 pytz==2016.4
 reportlab==3.4.0