diff --git a/requirements.txt b/requirements.txt
index dead38f..5e975a6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ pyparsing==2.4.2
 PySocks==1.7.0
 python-dateutil==2.8.0
 pytz==2019.2
-PyYAML==5.1.2
+PyYAML==5.4
 requests==2.22.0
 ruamel-yaml==0.15.46
 scipy==1.3.1