diff --git a/core/migrations/0001_initial.py b/core/migrations/0001_initial.py
index aa7b8d6..73d3810 100644
--- a/core/migrations/0001_initial.py
+++ b/core/migrations/0001_initial.py
@@ -36,12 +36,12 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='pin',
             name='image',
-            field=models.ForeignKey(related_name='pin', to='core.Image'),
+            field=models.ForeignKey(related_name='pin', to='core.Image', on_delete=models.CASCADE),
         ),
         migrations.AddField(
             model_name='pin',
             name='submitter',
-            field=models.ForeignKey(to='users.User'),
+            field=models.ForeignKey(to='users.User', on_delete=models.CASCADE),
         ),
         migrations.AddField(
             model_name='pin',
diff --git a/django_images/migrations/0001_initial.py b/django_images/migrations/0001_initial.py
index e3f0f84..ac95ca6 100644
--- a/django_images/migrations/0001_initial.py
+++ b/django_images/migrations/0001_initial.py
@@ -28,7 +28,7 @@ class Migration(migrations.Migration):
                 ('size', models.CharField(max_length=100)),
                 ('height', models.PositiveIntegerField(default=0, editable=False)),
                 ('width', models.PositiveIntegerField(default=0, editable=False)),
-                ('original', models.ForeignKey(to='django_images.Image')),
+                ('original', models.ForeignKey(to='django_images.Image', on_delete=models.CASCADE)),
             ],
         ),
         migrations.AlterUniqueTogether(
diff --git a/pinry/middleware.py b/pinry/middleware.py
index d3471ef..05e640d 100644
--- a/pinry/middleware.py
+++ b/pinry/middleware.py
@@ -2,6 +2,10 @@ from django.middleware.csrf import get_token
 
 
 class ForceCSRFCookieMiddleware:
+
+    def __init__(self, get_response):
+        self.get_response = get_response
+
     def process_request(self, request):
         if "CSRF_TOKEN" not in request.META:
             get_token(request)
diff --git a/users/middleware.py b/users/middleware.py
index 93f5daa..d3eab24 100644
--- a/users/middleware.py
+++ b/users/middleware.py
@@ -2,12 +2,15 @@ from django.conf import settings
 from django.http import HttpResponseForbidden
 
 
-class Public(object):
+class Public:
 
     acceptable_paths = (
         "/api/v2/profile/",
     )
 
+    def __init__(self, get_response):
+        self.get_response = get_response
+
     def process_request(self, request):
         if settings.PUBLIC is False and not request.user.is_authenticated():
             for path in self.acceptable_paths: