diff --git a/webapp/requirements.txt b/webapp/requirements.txt
index c197037..90d5956 100644
--- a/webapp/requirements.txt
+++ b/webapp/requirements.txt
@@ -8,7 +8,7 @@ Jinja2>=2.10.1
 jmespath==0.9.3
 MarkupSafe==1.1.0
 python-dateutil==2.7.5
-PyYAML==4.2b4
+PyYAML==5.4
 s3transfer==0.1.13
 six==1.12.0
 urllib3>=1.24.2