diff --git a/requirements.txt b/requirements.txt
index bea4e7d..235c63f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pyparsing==2.4.6
 python-dateutil==2.8.1
-PyYAML==5.3
+PyYAML==5.4
 requests==2.22.0
 requests-oauthlib==1.3.0
 rsa==4.0