diff --git a/requirements.txt b/requirements.txt
index a29ad0c..04048dc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -86,7 +86,7 @@ prompt-toolkit==2.0.9
 protobuf==3.8.0
 pycparser==2.19
 pydot==1.4.1
-Pygments==2.4.2
+Pygments==2.7.4
 pygraphviz==1.5
 PyHamcrest==1.9.0
 PyInquirer==1.0.3