diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 319f5a3..171fd46
--- a/requirements.txt
+++ b/requirements.txt
@@ -189,7 +189,7 @@ pycryptodome==3.8.2
 PyDispatcher==2.0.5
 pydot==1.4.1
 pyelftools==0.25
-Pygments==2.3.0
+Pygments==2.7.4
 PyHamcrest==1.9.0
 PyJWT==1.7.1
 pymongo==3.9.0