diff --git a/requirements.txt b/requirements.txt
index 83d0362a..6948e2cb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ beautifulsoup4==4.11.1
 html5lib==1.1
 mwparserfromhell==0.6.4
 python-frontmatter==1.0.0
-PyYAML==5.1
+PyYAML==5.4
 six==1.16.0
 soupsieve==2.3.2.post1
 webencodings==0.5.1