diff --git a/requirements.txt b/requirements.txt
index e6e9a88..560f2dc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ protobuf==3.6.0
 pyasn1==0.4.3
 pyasn1-modules==0.2.1
 pychalk==2.0.0
-Pygments==2.2.0
+Pygments==2.7.4
 Pyrebase==3.0.27
 python-jwt==2.0.1
 pytz==2018.4