diff --git a/requirements.txt b/requirements.txt
index 5a80374..d315ddc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ py==1.8.0
 PyJWT==1.7.1
 python3-openid==3.1.0
 pytz==2018.9
-PyYAML==5.1
+PyYAML==5.4
 redis==3.2.1
 requests==2.21.0
 requests-oauthlib==1.2.0