diff --git a/diagrams/onprem/network.py b/diagrams/onprem/network.py
index 660beb15..15d81b24 100644
--- a/diagrams/onprem/network.py
+++ b/diagrams/onprem/network.py
@@ -119,9 +119,11 @@ class Vyos(_Network):
 class Wildfly(_Network):
     _icon = "wildfly.png"
 
+
 class Yarp(_Network):
     _icon = "yarp.png"
 
+
 class Zookeeper(_Network):
     _icon = "zookeeper.png"