diff --git a/requirements.txt b/requirements.txt
index fb90a4d..d440312 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ path.py==10.3.1
 pickleshare==0.7.4
 prompt-toolkit==1.0.15
 protobuf==3.4.0
-Pygments==2.2.0
+Pygments==2.7.4
 python-dateutil==2.6.1
 pyzmq==16.0.2
 qtconsole==4.3.1