diff --git a/requirements.txt b/requirements.txt
index 85f2db0..142fb99 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -61,7 +61,7 @@ pyshp==2.1.0
 pyspark==2.4.4
 python-dateutil==2.8.0
 pytz==2019.3
-PyYAML==5.1.2
+PyYAML==5.4
 pyzmq==18.1.0
 qtconsole==4.5.5
 requests==2.22.0