diff --git a/requirements.txt b/requirements.txt
index 41a360d..ced2862 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -71,7 +71,7 @@ pyrsistent==0.16.0
 python-dateutil==2.8.1
 python-Levenshtein==0.12.0
 pytz==2019.3
-PyYAML==5.2
+PyYAML==5.4
 pyzmq==19.0.1
 qtconsole==4.7.4
 QtPy==1.9.0