diff --git a/requirements.txt b/requirements.txt
index 394587f..b5974dd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ MarkupSafe==1.0
 packaging==17.1
 Paver==1.3.4
 purepng==0.2.0
-Pygments==2.2.0
+Pygments==2.7.4
 pyparsing==2.2.0
 pytz==2018.5
 PyVirtualDisplay==0.2.1