diff --git a/requirements.txt b/requirements.txt
index a338519..a9f84ac 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ networkx==1.11
 normality==0.3.9
 python-dateutil==2.5.3
 python-editor==1.0.1
-PyYAML==5.1
+PyYAML==5.4
 six==1.10.0
 SQLAlchemy==1.1.3
 Werkzeug==0.15.3