diff --git a/requirements.txt b/requirements.txt
index 0189e51..759b111 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ pymessenger==0.0.7.0
 pymongo==3.7.2
 python-dateutil==2.7.5
 pytz==2018.9
-PyYAML==3.13
+PyYAML==5.1
 requests==2.21.0
 requests-toolbelt==0.8.0
 singledispatch==3.4.0.3