diff --git a/requirements.txt b/requirements.txt
index 12ac891..9338174 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ pkg-resources==0.0.0
 prompt-toolkit==2.0.7
 psycopg2==2.7.6.1
 ptyprocess==0.6.0
-Pygments==2.3.0
+Pygments==2.7.4
 pygraphviz==1.5
 python-dateutil==2.7.5
 pytz==2018.7