diff --git a/django-stubs/db/models/options.pyi b/django-stubs/db/models/options.pyi
index 4216bbad2..fccce7411 100644
--- a/django-stubs/db/models/options.pyi
+++ b/django-stubs/db/models/options.pyi
@@ -73,7 +73,7 @@ class Options(Generic[_M]):
     required_db_features: list[str]
     required_db_vendor: Literal["sqlite", "postgresql", "mysql", "oracle"] | None
     meta: type | None
-    pk: Field | None
+    pk: Field
     auto_field: AutoField | None
     abstract: bool
     managed: bool