diff --git a/flask/requirements.txt b/flask/requirements.txt
index e223fa6..a9234c0 100644
--- a/flask/requirements.txt
+++ b/flask/requirements.txt
@@ -31,7 +31,7 @@ Jinja2==2.10.1
 kombu==4.2.1
 Mako==1.0.7
 MarkupSafe==1.0
-Pygments==2.2.0
+Pygments==2.7.4
 PyJWT==1.6.4
 python-dateutil==2.7.3
 python-dotenv==0.9.1