diff --git a/.coverage b/.coverage
index 86117f6..d262878 100644
Binary files a/.coverage and b/.coverage differ
diff --git a/ormar/__init__.py b/ormar/__init__.py
index bfa2e87..90db22e 100644
--- a/ormar/__init__.py
+++ b/ormar/__init__.py
@@ -39,4 +39,5 @@ __all__ = [
     "NoMatch",
     "ForeignKey",
     "QuerySet",
+    "RelationType",
 ]
diff --git a/ormar/relations/__init__.py b/ormar/relations/__init__.py
index 54860f5..52ed667 100644
--- a/ormar/relations/__init__.py
+++ b/ormar/relations/__init__.py
@@ -1,5 +1,5 @@
-from ormar.relations.relation import Relation, RelationType
 from ormar.relations.alias_manager import AliasManager
+from ormar.relations.relation import Relation, RelationType
 from ormar.relations.relation_manager import RelationsManager
 
 __all__ = ["AliasManager", "Relation", "RelationsManager", "RelationType"]
diff --git a/ormar/relations/querysetproxy.py b/ormar/relations/querysetproxy.py
index 23516e2..01066f0 100644
--- a/ormar/relations/querysetproxy.py
+++ b/ormar/relations/querysetproxy.py
@@ -1,10 +1,11 @@
-from typing import TYPE_CHECKING, Union, List, Any, Tuple
+from typing import Any, List, TYPE_CHECKING, Tuple, Union
 
 import ormar
 
 if TYPE_CHECKING:  # pragma no cover
     from ormar.relations import Relation
     from ormar.models import Model
+    from ormar.queryset import QuerySet
 
 
 class QuerysetProxy:
diff --git a/ormar/relations/relation.py b/ormar/relations/relation.py
index 5ec709c..01e0ec4 100644
--- a/ormar/relations/relation.py
+++ b/ormar/relations/relation.py
@@ -77,5 +77,3 @@ class Relation:
 
     def __repr__(self) -> str:  # pragma no cover
         return str(self.related_models)
-
-
diff --git a/ormar/relations/relation_manager.py b/ormar/relations/relation_manager.py
index 8dc1e21..1407182 100644
--- a/ormar/relations/relation_manager.py
+++ b/ormar/relations/relation_manager.py
@@ -1,5 +1,5 @@
-from _weakref import proxy
-from typing import List, Type, Optional, Union, Tuple
+from typing import List, Optional, TYPE_CHECKING, Tuple, Type, Union
+from weakref import proxy
 
 import ormar
 from ormar.exceptions import RelationshipInstanceError
@@ -8,6 +8,9 @@ from ormar.fields.many_to_many import ManyToManyField
 from ormar.relations import Relation
 from ormar.relations.relation import RelationType
 
+if TYPE_CHECKING:  # pragma no cover
+    from ormar import Model
+
 
 class RelationsManager:
     def __init__(
@@ -125,4 +128,4 @@ class RelationsManager:
         if name in item._orm:
             relation_name = item.resolve_relation_name(related_model, item)
             item._orm.remove(name, related_model)
-            related_model._orm.remove(relation_name, item)
\ No newline at end of file
+            related_model._orm.remove(relation_name, item)
diff --git a/ormar/relations/relation_proxy.py b/ormar/relations/relation_proxy.py
index a3bdebd..8b0ff34 100644
--- a/ormar/relations/relation_proxy.py
+++ b/ormar/relations/relation_proxy.py
@@ -40,8 +40,8 @@ class RelationProxy(list):
         kwargs = {f"{owner_table}__{pkname}": pk_value}
         queryset = (
             ormar.QuerySet(model_cls=self.relation.to)
-                .select_related(owner_table)
-                .filter(**kwargs)
+            .select_related(owner_table)
+            .filter(**kwargs)
         )
         return queryset