diff --git a/requirements.txt b/requirements.txt
index e5e5e01caa..5d225cf6fa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ blinker==1.4
 psycopg2==2.8.3
 python-dateutil==2.8.0
 pytz>=2019.3
-PyYAML==5.1.2
+PyYAML==5.3.1
 redis==3.5.0
 requests==2.21.0
 SQLAlchemy==1.3.10