diff --git a/requirements.txt b/requirements.txt
index 96ddcbc..ce95ed9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,7 +50,7 @@ pysqlite==2.8.3
 python-dateutil==2.6.1
 python-gnupg==0.4.4
 pytz==2018.3
-PyYAML==5.1
+PyYAML==5.4
 pyzmq==14.7.0
 qtconsole==4.2.1
 requests==2.20.0