diff --git a/requirements.txt b/requirements.txt
index a898463..d15fd75 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,4 @@ wheel
 pystache==0.5.4
 markdown==2.4.1
 Pygments==2.0.2
-PyYAML==5.1
+PyYAML==5.4