diff --git a/requirements.txt b/requirements.txt
index 140cf97..1302797 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ pyasn1==0.4.6
 pyasn1-modules==0.2.6
 pytest==5.0.1
 python-dateutil==2.8.0
-PyYAML==5.1.2
+PyYAML==5.4
 requests==2.22.0
 requests-oauthlib==1.2.0
 rsa==4.0