diff --git a/requirements.txt b/requirements.txt
index ae54afc..b3a7daa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ PyMySQL==0.7.9
 python-dateutil==2.6.0
 python-http-client==2.2.1
 pytz==2016.7
-PyYAML==3.12
+PyYAML==5.1
 requests==2.12.1
 sendgrid==3.6.3
 six==1.10.0