diff --git a/requirements.txt b/requirements.txt
index 14e9d0a..b72d061 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -62,7 +62,7 @@ pyparsing==2.2.0
 pysaml2==4.4.0
 python-dateutil==2.6.1
 pytz==2017.2
-PyYAML==3.12
+PyYAML==5.4
 pyzmq==16.0.2
 qtconsole==4.3.1
 rdflib==4.2.2