diff --git a/requirements.txt b/requirements.txt
index 195e60c..f5233f5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ jsonschema==2.6.0
 MarkupSafe==1.0
 nose==1.3.7
 python-dateutil==2.6.1
-PyYAML==3.12
+PyYAML==5.4
 requests==2.18.4
 requests-mock==1.4.0
 six==1.11.0