diff --git a/requirements.txt b/requirements.txt
index 9999e37..f05db2d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 grpcio-tools>=1.9.0,<=1.50.0
 grpcio>=1.9.0,<=1.50.0
-PyYAML==5.3.1
+PyYAML==5.4
 pytest>=7.0.0,<=7.1.3
 mock>=2.0.0
 pyqrllib>=1.2.3,<1.3.0