diff --git a/docker-compose.yml b/docker-compose.yml
index 7a6685b..36b9df1 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,5 +1,3 @@
-version: '3.8'
-
 services:
   postgresql:
     image: postgres:16
diff --git a/src/backend/core/migrations/0001_initial.py b/src/backend/core/migrations/0001_initial.py
index 4ff3059..4797091 100644
--- a/src/backend/core/migrations/0001_initial.py
+++ b/src/backend/core/migrations/0001_initial.py
@@ -146,11 +146,11 @@ class Migration(migrations.Migration):
         ),
         migrations.AddConstraint(
             model_name='contact',
-            constraint=models.CheckConstraint(check=models.Q(('base__isnull', False), ('owner__isnull', True), _negated=True), name='base_owner_constraint', violation_error_message='A contact overriding a base contact must be owned.'),
+            constraint=models.CheckConstraint(condition=models.Q(('base__isnull', False), ('owner__isnull', True), _negated=True), name='base_owner_constraint', violation_error_message='A contact overriding a base contact must be owned.'),
         ),
         migrations.AddConstraint(
             model_name='contact',
-            constraint=models.CheckConstraint(check=models.Q(('base', models.F('id')), _negated=True), name='base_not_self', violation_error_message='A contact cannot be based on itself.'),
+            constraint=models.CheckConstraint(condition=models.Q(('base', models.F('id')), _negated=True), name='base_not_self', violation_error_message='A contact cannot be based on itself.'),
         ),
         migrations.AlterUniqueTogether(
             name='contact',
diff --git a/src/backend/core/models.py b/src/backend/core/models.py
index 20b4582..8c2c573 100644
--- a/src/backend/core/models.py
+++ b/src/backend/core/models.py
@@ -124,12 +124,12 @@ class Contact(BaseModel):
         unique_together = ("owner", "base")
         constraints = [
             models.CheckConstraint(
-                check=~models.Q(base__isnull=False, owner__isnull=True),
+                condition=~models.Q(base__isnull=False, owner__isnull=True),
                 name="base_owner_constraint",
                 violation_error_message="A contact overriding a base contact must be owned.",
             ),
             models.CheckConstraint(
-                check=~models.Q(base=models.F("id")),
+                condition=~models.Q(base=models.F("id")),
                 name="base_not_self",
                 violation_error_message="A contact cannot be based on itself.",
             ),