diff --git a/requirements.txt b/requirements.txt
index 9af0bcc..ccf5b76 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,7 +50,7 @@ python-http-client==2.2.1
 python-openid==2.2.5
 python3-openid==3.2.0
 pytz==2017.2
-PyYAML==5.3
+PyYAML==5.4
 requests==2.20.0
 requests-oauthlib==0.8.0
 rsa==3.4.2