diff --git a/requirements.txt b/requirements.txt
index 45eb2f7..a1e337a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,7 +38,7 @@ pyasn1==0.4.8
 pyasn1-modules==0.2.7
 python-dateutil==2.8.1
 pytz==2019.3
-PyYAML==5.2
+PyYAML==5.4
 requests==2.22.0
 requests-oauthlib==1.3.0
 rsa==4.0