diff --git a/requirements.txt b/requirements.txt
index 07e7f7f..dde8f53 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ ForgeryPy==0.1
 Jinja2==2.7.3
 Mako==1.0.1
 MarkupSafe==0.23
-PyYAML==3.11
+PyYAML==5.4
 SQLAlchemy==1.0.0
 WTForms==2.0.2
 Werkzeug==0.10.4