diff --git a/requirements.txt b/requirements.txt
index 8ff17a58..6865c579 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -42,7 +42,7 @@ pymongo==3.8.0
 pytest==4.1.0
 python-jsonrpc==0.10.0
 pytz==2019.1
-pyyaml==5.1
+pyyaml==5.4
 requests==2.22.0
 scandir==1.10.0 ; python_version < '3.5'
 singledispatch==3.4.0.3