diff --git a/requirements.txt b/requirements.txt
index 9cfaa90..ae5750b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ Jinja2==2.9.6
 MarkupSafe==1.0
 packaging==16.8
 pyparsing==2.2.0
-PyYAML==3.12
+PyYAML==5.4
 requests==2.18.3
 six==1.10.0
 urllib3==1.22