diff --git a/requirements.txt b/requirements.txt
index 16a45fc..7a9c5dc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ nbconvert==4.2.0
 nbformat==4.0.1
 notebook==4.2.1
 pickleshare==0.7.2
-Pygments==2.1.3
+Pygments==2.7.4
 pyreadline==2.1
 pyzmq==15.2.0
 qtconsole==4.2.1