diff --git a/requirements.txt b/requirements.txt
index c90c525..34a8734 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,4 +3,4 @@ jinja2-markdown==0.0.3
 Markdown==3.1.1
 MarkupSafe==1.1.1
 pkg-resources==0.0.0
-PyYAML==5.1.2
+PyYAML==5.4