diff --git a/requirements.txt b/requirements.txt
index 5838344..1535050 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ pickleshare==0.7.4
 prompt-toolkit==1.0.14
 protobuf==3.2.0
 ptyprocess==0.5.1
-Pygments==2.2.0
+Pygments==2.7.4
 pyparsing==2.2.0
 python-dateutil==2.6.0
 pyzmq==16.0.2