diff --git a/requirements.txt b/requirements.txt
index 16f4f77..6a7ccc1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -55,7 +55,7 @@ protobuf==3.2.0
 psycopg2==2.7.3.1
 ptyprocess==0.5.2
 pyglet==1.2.4
-Pygments==2.2.0
+Pygments==2.7.4
 pyparsing==2.2.0
 pyproj==1.9.5.1
 python-dateutil==2.6.1