diff --git a/requirements.txt b/requirements.txt
index a330778..6547a2f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ pandas==0.20.3
 pyparsing==2.2.0
 python-dateutil==2.6.1
 pytz==2017.2
-PyYAML==3.12
+PyYAML==5.4
 requests==2.18.3
 six==1.10.0
 tornado==4.5.1