diff --git a/requirements.txt b/requirements.txt
index c9dc7f7..d1424c5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ kiwisolver==1.0.1
 matplotlib==3.0.2
 mongoengine==0.15.3
 numpy==1.15.4
-Pygments==2.3.0
+Pygments==2.7.4
 pymongo==3.7.1
 pyparsing==2.3.0
 python-dateutil==2.7.5