diff --git a/requirements.txt b/requirements.txt
index dccb701..0d009ba 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ jsonpickle==0.9.5
 MarkupSafe==1.0
 multidict==3.3.2
 pytz==2017.3
-PyYAML==5.1
+PyYAML==5.4
 requests==2.20.0
 typing==3.6.2
 voluptuous==0.10.5