diff --git a/geoportal/upstream_requirements.txt b/geoportal/upstream_requirements.txt
index 05efe8758..76c84baf0 100644
--- a/geoportal/upstream_requirements.txt
+++ b/geoportal/upstream_requirements.txt
@@ -59,7 +59,7 @@ pyramid-tm==2.2.1  # geoportal
 pytest-cov==2.6.1  # tests
 pytest-selenium==1.16.0  # admin tests
 python-dateutil==2.6.1  # geoportal, rq.filter: <2.7.0
-PyYAML==3.13  # geoportal
+PyYAML==5.4  # geoportal
 rasterio==1.0.2  # geoportal raster, rq.filter: <=1.0.2
 requests==2.21.0  # geoportal
 redis==3.2.1  # geoportal cache