diff --git a/requirements.txt b/requirements.txt
index 9a2224f..32e383b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -64,7 +64,7 @@ pyspectral==0.9.2
 python-dateutil==2.8.1
 python-geotiepoints==1.1.8
 pytz==2019.3
-PyYAML==5.2
+PyYAML==5.4
 rasterio==1.1.2
 requests==2.22.0
 satpy==0.17.1