diff --git a/requirements.txt b/requirements.txt
index a1d0112..f3d0add 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -52,7 +52,7 @@ pytest-mock==3.1.0
 python-dateutil==2.8.0
 python-jose==3.1.0
 pytz==2019.3
-PyYAML==5.1.2
+PyYAML==5.4
 requests==2.22.0
 requests-mock==1.8.0
 requests-oauthlib==1.2.0