diff --git a/requirements.txt b/requirements.txt
index d403a5a..eeade7e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -44,7 +44,7 @@ pyparsing==2.2.0
 pyproj==1.9.5.1
 python-dateutil==2.7.0
 pytz==2018.3
-PyYAML==3.12
+PyYAML==5.4
 pyzmq==17.0.0
 requests==2.18.4
 Rtree==0.8.3