diff --git a/accounting/migrations/0002_auto_20160824_2152.py b/accounting/migrations/0002_auto_20160824_2152.py
index fde9ba22..adfc0225 100644
--- a/accounting/migrations/0002_auto_20160824_2152.py
+++ b/accounting/migrations/0002_auto_20160824_2152.py
@@ -100,6 +100,6 @@ class Migration(migrations.Migration):
             ),
         ),
         migrations.AlterUniqueTogether(
-            name="operation", unique_together=set([("number", "journal")])
+            name="operation", unique_together={("number", "journal")}
         ),
     ]
diff --git a/accounting/migrations/0004_auto_20161005_1505.py b/accounting/migrations/0004_auto_20161005_1505.py
index 0a2ba8c2..fe8fd3c4 100644
--- a/accounting/migrations/0004_auto_20161005_1505.py
+++ b/accounting/migrations/0004_auto_20161005_1505.py
@@ -45,6 +45,6 @@ class Migration(migrations.Migration):
             ),
         ),
         migrations.AlterUniqueTogether(
-            name="label", unique_together=set([("name", "club_account")])
+            name="label", unique_together={("name", "club_account")}
         ),
     ]
diff --git a/club/migrations/0009_auto_20170822_2232.py b/club/migrations/0009_auto_20170822_2232.py
index b902d02b..8b98dbef 100644
--- a/club/migrations/0009_auto_20170822_2232.py
+++ b/club/migrations/0009_auto_20170822_2232.py
@@ -109,6 +109,6 @@ class Migration(migrations.Migration):
         ),
         migrations.AlterUniqueTogether(
             name="mailingsubscription",
-            unique_together=set([("user", "email", "mailing")]),
+            unique_together={("user", "email", "mailing")},
         ),
     ]
diff --git a/core/management/commands/check_front.py b/core/management/commands/check_front.py
index b6e24479..6f7bfda7 100644
--- a/core/management/commands/check_front.py
+++ b/core/management/commands/check_front.py
@@ -24,11 +24,11 @@ class Command(BaseCommand):
     def handle(self, *args, **options):
         deps = settings.SITH_FRONT_DEP_VERSIONS
 
-        processes = dict(
-            (url, create_process(url))
+        processes = {
+            url: create_process(url)
             for url in deps.keys()
             if parse_semver(deps[url]) is not None
-        )
+        }
 
         for url, process in processes.items():
             try:
diff --git a/core/migrations/0001_initial.py b/core/migrations/0001_initial.py
index 1e5ccb07..47cad8ad 100644
--- a/core/migrations/0001_initial.py
+++ b/core/migrations/0001_initial.py
@@ -573,7 +573,7 @@ class Migration(migrations.Migration):
             managers=[("objects", core.models.RealGroupManager())],
         ),
         migrations.AlterUniqueTogether(
-            name="page", unique_together=set([("name", "parent")])
+            name="page", unique_together={("name", "parent")}
         ),
         migrations.AddField(
             model_name="user",
diff --git a/launderette/migrations/0001_initial.py b/launderette/migrations/0001_initial.py
index 32101276..2c1d70d1 100644
--- a/launderette/migrations/0001_initial.py
+++ b/launderette/migrations/0001_initial.py
@@ -176,6 +176,6 @@ class Migration(migrations.Migration):
             ),
         ),
         migrations.AlterUniqueTogether(
-            name="token", unique_together=set([("name", "launderette", "type")])
+            name="token", unique_together={("name", "launderette", "type")}
         ),
     ]
diff --git a/sas/migrations/0002_auto_20161119_1241.py b/sas/migrations/0002_auto_20161119_1241.py
index 5728415b..838bb3ed 100644
--- a/sas/migrations/0002_auto_20161119_1241.py
+++ b/sas/migrations/0002_auto_20161119_1241.py
@@ -45,6 +45,6 @@ class Migration(migrations.Migration):
             ],
         ),
         migrations.AlterUniqueTogether(
-            name="peoplepicturerelation", unique_together=set([("user", "picture")])
+            name="peoplepicturerelation", unique_together={("user", "picture")}
         ),
     ]