diff --git a/requirements.txt b/requirements.txt
index 30875f39..727db4f2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ ntplib==0.3.4
 Twisted==20.3.0
 colorlog==3.1.0
 simplejson==3.11.1
-PyYAML==5.3.1
+PyYAML==5.4
 grpcio-tools>=1.9.0,<=1.50.0
 grpcio>=1.9.0,<=1.50.0
 google-api-python-client==1.8.3