diff --git a/luigi/requirements.txt b/luigi/requirements.txt
old mode 100755
new mode 100644
index 74dca85..7ab9772
--- a/luigi/requirements.txt
+++ b/luigi/requirements.txt
@@ -64,7 +64,7 @@ pycairo==1.15.4
 pycrypto==2.6.1
 pycups==1.9.73
 pycurl==7.43.0
-Pygments==2.2.0
+Pygments==2.7.4
 pygobject==3.26.1
 pyparsing==2.2.0
 pysmbc==1.0.15.6