diff --git a/src/dto/placement.py b/src/dto/placement.py
index a63d402..6928d5c 100644
--- a/src/dto/placement.py
+++ b/src/dto/placement.py
@@ -60,7 +60,6 @@ class UpdatePlacementInput(pydantic.BaseModel):
     placement_date: datetime.datetime | None = None
     cost: float | None = None
     comment: str | None = None
-    ad_post_url: str | None = None
     status: domain.PlacementStatus | None = None
 
 
diff --git a/src/usecase/placement/update_placement.py b/src/usecase/placement/update_placement.py
index 56d15bd..789c1dd 100644
--- a/src/usecase/placement/update_placement.py
+++ b/src/usecase/placement/update_placement.py
@@ -26,8 +26,6 @@ async def update_placement(
             placement.cost = input.cost
         if input.comment is not None:
             placement.comment = input.comment
-        if input.ad_post_url is not None:
-            placement.ad_post_url = input.ad_post_url
         if input.status is not None:
             placement.status = input.status