diff --git a/requirements.txt b/requirements.txt
index 3b67a0e..7e7185f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ pickleshare==0.7.5
 plotly==3.5.0
 prompt-toolkit==2.0.8
 ptyprocess==0.6.0
-Pygments==2.3.1
+Pygments==2.7.4
 pyparsing==2.3.1
 python-dateutil==2.7.5
 pytz==2018.9