diff --git a/requirements.txt b/requirements.txt
index d04801a..e073faf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -44,7 +44,7 @@ prompt-toolkit==1.0.15
 protobuf==3.5.1
 ptyprocess==0.5.2
 pydot==1.2.3
-Pygments==2.2.0
+Pygments==2.7.4
 pykalman==0.9.5
 pyparsing==2.2.0
 python-dateutil==2.6.1