diff --git a/conf/apps/family/child.py b/conf/apps/family/child.py
index ee8a0e0..3818f21 100644
--- a/conf/apps/family/child.py
+++ b/conf/apps/family/child.py
@@ -1,5 +1,6 @@
 from appdaemon.adapi import ADAPI
 
+
 class Child(ADAPI):
     def initialize(self):
-        self.log(f"{self.__class__.__name__} Initialized")
+        self.log(f'{self.__class__.__name__} Initialized')
diff --git a/conf/apps/family/grand_parent.py b/conf/apps/family/grand_parent.py
index d15b1c9..1c9f38f 100644
--- a/conf/apps/family/grand_parent.py
+++ b/conf/apps/family/grand_parent.py
@@ -1,5 +1,6 @@
 from appdaemon.adapi import ADAPI
 
+
 class GrandParent(ADAPI):
     def initialize(self):
-        self.log(f"{self.__class__.__name__} Initialized")
+        self.log(f'{self.__class__.__name__} Initialized')
diff --git a/conf/apps/family/parent.py b/conf/apps/family/parent.py
index 7cfa48f..1ec5bf3 100644
--- a/conf/apps/family/parent.py
+++ b/conf/apps/family/parent.py
@@ -1,5 +1,6 @@
 from appdaemon.adapi import ADAPI
 
+
 class Parent(ADAPI):
     def initialize(self):
-        self.log(f"{self.__class__.__name__} Initialized")
+        self.log(f'{self.__class__.__name__} Initialized')
diff --git a/conf/apps/family/sibling.py b/conf/apps/family/sibling.py
index 844e06e..51267c1 100644
--- a/conf/apps/family/sibling.py
+++ b/conf/apps/family/sibling.py
@@ -2,6 +2,7 @@ from appdaemon.adapi import ADAPI
 
 from child import Child
 
+
 class Sibling(Child):
     def initialize(self):
-        self.log(f"{self.__class__.__name__} Initialized")
+        self.log(f'{self.__class__.__name__} Initialized')
diff --git a/conf/apps/hello.py b/conf/apps/hello.py
index a4780fd..a60f052 100644
--- a/conf/apps/hello.py
+++ b/conf/apps/hello.py
@@ -3,4 +3,4 @@ from appdaemon.adapi import ADAPI
 
 class HelloWorld(ADAPI):
     def initialize(self):
-        self.log(f"{self.__class__.__name__} Initialized")
+        self.log(f'{self.__class__.__name__} Initialized')
diff --git a/conf/apps/simple_app/simple.py b/conf/apps/simple_app/simple.py
index 3f8a0cd..4a60ccc 100644
--- a/conf/apps/simple_app/simple.py
+++ b/conf/apps/simple_app/simple.py
@@ -3,4 +3,4 @@ from appdaemon.adapi import ADAPI
 
 class SimpleApp(ADAPI):
     def initialize(self):
-        self.log(f"{self.__class__.__name__} Initialized")
+        self.log(f'{self.__class__.__name__} Initialized')