diff --git a/main.py b/main.py
index e24eaa6..3003923 100644
--- a/main.py
+++ b/main.py
@@ -59,7 +59,7 @@ def addNewFlowRoute(self, flowRouteData=None):
         my_router = None
         for router in self.routers:
 
-            for name, value in router.iteritems():
+            for name, value in router.items():
                 if 'rr' in value['type']:
                     my_router = [value['ip']]
 
@@ -99,7 +99,7 @@ def modFlowRoute(self, flowRouteData=None):
         my_router = None
         for router in self.routers:
 
-            for name, value in router.iteritems():
+            for name, value in router.items():
                 if 'rr' in value['type']:
                     my_router = [value['ip']]
 
@@ -130,7 +130,7 @@ def delFlowRoute(self, flowRouteData=None):
         my_router = None
         for router in self.routers:
 
-            for name, value in router.iteritems():
+            for name, value in router.items():
                 if 'rr' in value['type']:
                     my_router = [value['ip']]
                     
@@ -163,7 +163,7 @@ def getActiveFlowRoutes(self):
 
         for router in self.routers:
 
-            for name, value in router.iteritems():
+            for name, value in router.items():
 
                 with Device(host=value['ip'], user=self.dev_user, password=self.dev_pw) as dev:
 
@@ -204,7 +204,7 @@ def getActiveFlowRoutes(self):
                                 _item = item.split('=')
                                 destination[index] = _item[1] if len(_item) > 1 else _item[0]
 
-                            hash_object = hashlib.sha512(b'{0}{1}'.format(str(destination), str(value['ip'])))
+                            hash_object = hashlib.sha512('{0}{1}'.format(str(destination), str(value['ip'])).encode('utf-8'))
                             hex_dig = hash_object.hexdigest()
                             _age = dict()
 
@@ -305,7 +305,7 @@ def getActiveFlowRouteFilter(self):
 
             for router in self.routers:
 
-                for name, value in router.iteritems():
+                for name, value in router.items():
                     self.filter_active[name] = list()
 
                     with Device(host=value['ip'], user=self.dev_user, password=self.dev_pw) as dev:
@@ -347,7 +347,7 @@ def loadFlowRouteConfig(self):
 
         for router in self.routers:
 
-            for name, value in router.iteritems():
+            for name, value in router.items():
 
                 if 'rr' in value['type']:
                     dev_ip.append(value['ip'])
@@ -447,7 +447,7 @@ def loadFlowRouteConfig(self):
                             for route in _data['route']:
                                 _action = dict()
 
-                                for key, value in route['then'].iteritems():
+                                for key, value in route['then'].items():
 
                                     if value[0]:
                                         _action[key] = {'value': value}