diff --git a/requirements.txt b/requirements.txt
index 8df6097..34cea85 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -39,7 +39,7 @@ PyJWT==1.7.1
 pytest-runner==4.4
 python-dateutil==2.8.0
 pytz==2019.1
-PyYAML==5.1
+PyYAML==5.4
 requests==2.21.0
 six==1.12.0
 tablib==0.13.0