diff --git a/requirements.txt b/requirements.txt
index 218d125..b3d30a5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -89,7 +89,7 @@ pyrsistent==0.17.3
 pyshp==2.1.3
 python-dateutil==2.8.1
 pytz==2019.3
-PyYAML==5.3.1
+PyYAML==5.4
 pyzmq==19.0.0
 rasterio==1.1.8
 regex==2020.2.20