diff --git a/requirements.txt b/requirements.txt
index 1ee47c2..f5552c3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ pickleshare==0.7.4
 prompt-toolkit==1.0.15
 psycopg2==2.7.3.2
 ptyprocess==0.5.2
-Pygments==2.2.0
+Pygments==2.7.4
 simplegeneric==0.8.1
 traitlets==4.3.2
 wcwidth==0.1.7