diff --git a/app/models.py b/app/models.py
index 9b4a856..9b3e2ed 100644
--- a/app/models.py
+++ b/app/models.py
@@ -61,7 +61,7 @@ class InboxObject(Base):
     ap_id: Mapped[str] = Column(String, nullable=False, unique=True, index=True) # type: ignore
     ap_context = Column(String, nullable=True)
     ap_published_at = Column(DateTime(timezone=True), nullable=False)
-    ap_object: Mapped[dict[str, Any]] = Column(JSON, nullable=False) # type: ignore
+    ap_object: Mapped[dict[str, Any] | None] = Column(JSON, nullable=False) # type: ignore
     activity_object_ap_id = Column(String, nullable=True, index=True)
 
     visibility = Column(Enum(ap.VisibilityEnum), nullable=False)