diff --git a/web/requirements.txt b/web/requirements.txt
index f345000..c4ea0e9 100644
--- a/web/requirements.txt
+++ b/web/requirements.txt
@@ -16,7 +16,7 @@ MarkupSafe==1.0
 psutil==5.2.2
 pymongo==3.4.0
 pytz==2017.2
-PyYAML==3.12
+PyYAML==5.4
 requests==2.18.1
 urllib3==1.21.1
 vine==1.1.4