diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index c1b9540..a42c1dd
--- a/requirements.txt
+++ b/requirements.txt
@@ -61,7 +61,7 @@ MongoAlchemy==0.19
 paho-mqtt==1.3.1
 pika==0.10.0
 pycparser==2.19
-Pygments==2.2.0
+Pygments==2.7.4
 pymongo==2.8.1
 python-dateutil==2.8.0
 python-editor==1.0.4