diff --git a/requirements.txt b/requirements.txt
index c3b85f2..2d5feaf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -106,7 +106,7 @@ pyasn1==0.1.9
 pycosat==0.6.1
 pycparser==2.17
 pyflakes==1.5.0
-Pygments==2.1.3
+Pygments==2.7.4
 pylint==1.6.4
 pyOpenSSL==16.2.0
 pyparsing==2.2.0