diff --git a/requirements/main.txt b/requirements/main.txt
index a4c00e9e4..93ac82496 100644
--- a/requirements/main.txt
+++ b/requirements/main.txt
@@ -2,7 +2,7 @@ blinker==1.3
 Flask==0.10.1
 gevent==1.0.1
 gunicorn==19.1.1
-PyYAML==3.11
+PyYAML==5.4
 requests==2.3.0
 M2Crypto==0.22.3
 sqlalchemy==0.9.4