diff --git a/requirements.txt b/requirements.txt
index 2d556bb..5b34f6f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -60,7 +60,7 @@ plotly==2.0.14
 preshed==1.0.0
 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