diff --git a/requirements.txt b/requirements.txt
index 2988b84..d0609d0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,7 +38,7 @@ pickleshare==0.7.4
 plotly==2.1.0
 prompt-toolkit==1.0.15
 ptyprocess==0.5.2
-Pygments==2.2.0
+Pygments==2.7.4
 pyparsing==2.2.0
 python-dateutil==2.6.1
 pytz==2017.2