diff --git a/requirements.txt b/requirements.txt
index f308d6d9..03e4d08f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ protobuf==3.5.2.post1
 ptyprocess==0.5.2
 pydot==1.2.4
 pydot-ng==1.0.0
-Pygments==2.2.0
+Pygments==2.7.4
 pyparsing==2.2.0
 python-dateutil==2.7.1
 pytz==2018.3