diff --git a/requirements.txt b/requirements.txt
index 3f66785..f39961a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ MarkupSafe==1.0
 mysqlclient==1.3.12
 packaging==17.1
 purepng==0.2.0
-Pygments==2.2.0
+Pygments==2.7.4
 pyparsing==2.2.0
 pytz==2018.4
 recommonmark==0.4.0