diff --git a/API/pythonCppAPI/requirements.txt b/API/pythonCppAPI/requirements.txt
old mode 100755
new mode 100644
index a0754b2d..88d042a8
--- a/API/pythonCppAPI/requirements.txt
+++ b/API/pythonCppAPI/requirements.txt
@@ -54,7 +54,7 @@ prompt-toolkit==2.0.9
 protobuf==3.8.0
 pycparser==2.19
 pydicom==1.2.2
-Pygments==2.4.2
+Pygments==2.7.4
 pyparsing==2.4.0
 pypng==0.0.19
 pyrsistent==0.15.2