diff --git a/requirements.txt b/requirements.txt
index 8b057be..840face 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -73,7 +73,7 @@ pyparsing==2.3.0
 pytest==4.0.1
 python-dateutil==2.7.5
 pytz==2017.3
-PyYAML==5.1
+PyYAML==5.4
 regex==2017.11.9
 requests==2.20.1
 responses==0.10.4