diff --git a/requirements.txt b/requirements.txt
index 91b21c1..728df68 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ pandas==0.22.0
 passlib==1.7.1
 python-dateutil==2.6.1
 pytz==2018.3
-PyYAML==3.12
+PyYAML==5.4
 requests==2.18.4
 six==1.11.0
 urllib3==1.22