diff --git a/requirements.txt b/requirements.txt
index cae1362..b42b035 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,7 +24,7 @@ pyproj==2.3.0
 pyshp==2.1.0
 python-dateutil==2.8.0
 pytz==2019.2
-PyYAML==5.1.2
+PyYAML==5.4
 Shapely==1.6.4.post2
 six==1.12.0
 tornado==6.0.3