diff --git a/requirements.txt b/requirements.txt
index 90adaff..353518d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -131,7 +131,7 @@ pycosat==0.6.3
 pycparser==2.19
 pycurl==7.43.0.3
 pyflakes==2.1.1
-Pygments==2.4.2
+Pygments==2.7.4
 pyknp==0.4.1
 pylint==2.3.1
 pyodbc==4.0.27