diff --git a/requirements.txt b/requirements.txt
index 258665d..bf797c5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ Markdown==3.10.2
 MarkupSafe==1.0
 numpy==1.15.4
 pelican==4.0.1
-Pygments==2.3.1
+Pygments==2.15.0
 pyreadline==2.1
 python-dateutil==2.8.0
 pytz==2018.9