diff --git a/src/django_enum/choices.py b/src/django_enum/choices.py
index 9882494..bd7b25a 100644
--- a/src/django_enum/choices.py
+++ b/src/django_enum/choices.py
@@ -25,7 +25,7 @@
 ChoicesType = (
     model_enums.ChoicesType
     if django_version[0:2] >= (5, 0)
-    else model_enums.ChoicesMeta
+    else getattr(model_enums, "ChoicesMeta")  # removed in Django 5.0
 )
 
 DEFAULT_BOUNDARY = getattr(enum, "KEEP", None)
diff --git a/src/django_enum/fields.py b/src/django_enum/fields.py
index 42e4001..5e86d95 100644
--- a/src/django_enum/fields.py
+++ b/src/django_enum/fields.py
@@ -787,8 +787,8 @@ def contribute_to_class(
                 constraint |= Q(**{f"{self.name or name}__isnull": True})
             cls._meta.constraints = [
                 *cls._meta.constraints,
-                CheckConstraint(
-                    check=constraint,
+                CheckConstraint(  # type: ignore[call-arg]
+                    check=constraint,  # type: ignore[call-arg]
                     name=self.constraint_name(cls, self.name or name, self.enum),
                 )
                 if django_version[0:2] < (5, 1)
@@ -1254,8 +1254,8 @@ def contribute_to_class(
 
                 cls._meta.constraints = [
                     *cls._meta.constraints,
-                    CheckConstraint(
-                        check=constraint,
+                    CheckConstraint(  # type: ignore[call-arg]
+                        check=constraint,  # type: ignore[call-arg]
                         name=self.constraint_name(cls, self.name or name, self.enum),
                     )
                     if django_version[0:2] < (5, 1)
diff --git a/src/django_enum/query.py b/src/django_enum/query.py
index 47785d8..4e159db 100644
--- a/src/django_enum/query.py
+++ b/src/django_enum/query.py
@@ -27,7 +27,7 @@ def process_lhs(self, compiler, connection, lhs=None):
         return lhs_sql, lhs_params
 
     def get_rhs_op(self, connection, rhs):
-        return connection.operators["exact"] % rhs
+        return connection.operators["exact"] % rhs  # type: ignore[attr-defined]
 
 
 # class ExtraBigFlagMixin: