diff --git a/requirements/pro.txt b/requirements/pro.txt
index bc887e7..a9b6246 100644
--- a/requirements/pro.txt
+++ b/requirements/pro.txt
@@ -2,7 +2,7 @@ django==2.1.2
 pillow==5.3.0
 mysqlclient==1.3.13
 ipython==7.1.1
-pyyaml==3.13
+pyyaml==4.2b1
 ruamel.yaml==0.15.80
 python-nmap==0.6.1
 redis==3.0.1