diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 242bf1ec..7c9e4e91
--- a/requirements.txt
+++ b/requirements.txt
@@ -34,7 +34,7 @@ prompt-toolkit==2.0.7
 protobuf==3.6.1
 ptyprocess==0.6.0
 pycparser==2.19
-Pygments==2.3.1
+Pygments==2.7.4
 pyparsing==2.3.1
 python-dateutil==2.7.5
 pytz==2018.9