diff --git a/requirements.txt b/requirements.txt
index 9732411..7cde095 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@ pyasn1==0.4.5
 pycodestyle==2.4.0
 pydocstyle==3.0.0
 pyflakes==2.0.0
-Pygments==2.3.1
+Pygments==2.7.4
 pytest==4.1.1
 python-dateutil==2.8.0
 PyYAML==5.1