diff --git a/requirements.txt b/requirements.txt
index 8f98481..36151b8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ pickleshare==0.7.4
 prompt-toolkit==1.0.15
 ptyprocess==0.5.2
 pyglet==1.3.1
-Pygments==2.2.0
+Pygments==2.7.4
 pyparsing==2.2.0
 python-dateutil==2.7.2
 pytz==2018.3