diff --git a/requirements.txt b/requirements.txt
index 47917a9..c3115cf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,6 +7,6 @@ MarkupSafe==2.0.1
 packaging==16.8
 pyparsing==2.1.10
 python-Levenshtein==0.12.1
-PyYAML==5.3.1
+PyYAML==5.4
 six==1.10.0
 Werkzeug==2.0.3