diff --git a/requirements.txt b/requirements.txt
index 7312d22..90f330b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,7 +37,7 @@ pandas==0.18.1
 pexpect==4.0.1
 pickleshare==0.7.2
 ptyprocess==0.5.1
-Pygments==2.1.3
+Pygments==2.7.4
 pyparsing==2.1.8
 pyproj==1.9.5.1
 python-dateutil==2.5.3