diff --git a/requirements.txt b/requirements.txt
index f1594ed..7aa1297 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -41,7 +41,7 @@ py==1.5.4
 py2neo==4.1.0
 pycodestyle==2.3.1
 pyflakes==1.6.0
-Pygments==2.2.0
+Pygments==2.7.4
 pytest==3.7.2
 pytest-mock==1.10.0
 python-dateutil==2.7.3