diff --git a/requirements.txt b/requirements.txt
index 4452f52..c195e75 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,5 +6,5 @@ mccabe==0.6.1
 pycodestyle==2.5.0
 pyflakes==2.1.1
 PyMySQL==0.9.3
-PyYAML==5.3.1
+PyYAML==5.4
 SQLAlchemy==1.3.16