diff --git a/distributor/requirements.txt b/distributor/requirements.txt
index 21da021..80ddc02 100644
--- a/distributor/requirements.txt
+++ b/distributor/requirements.txt
@@ -4,7 +4,7 @@ waitress==1.4.4
 Flask-Cors==3.0.9
 jsonschema==2.6.0
 simplejson==3.17.0
-PyYAML==5.1
+PyYAML==5.4
 fastjsonschema==2.14.1
 pymongo==3.8.0