diff --git a/requirements.txt b/requirements.txt
index 0acab3f..82128be 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,7 +32,7 @@ pyasn1-modules==0.2.7
 pycodestyle==2.5.0
 pyparsing==2.4.5
 python-dateutil==2.8.1
-PyYAML==5.1.2
+PyYAML==5.4
 requests==2.22.0
 requests-oauthlib==1.3.0
 rsa==4.0