diff --git a/requirements.txt b/requirements.txt
index ed49b72..e9379f5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ ndg-httpsclient==0.4.3
 oauthlib==2.0.6
 pyasn1==0.4.2
 pycparser==2.18
-Pygments==2.2.0
+Pygments==2.7.4
 PyJWT==1.5.3
 pyOpenSSL==17.5.0
 python-openid==2.2.5