diff --git a/scrapy_poet/injection.py b/scrapy_poet/injection.py
index 9642b0ea..d662ed0d 100644
--- a/scrapy_poet/injection.py
+++ b/scrapy_poet/injection.py
@@ -160,7 +160,7 @@ def _get_item_builder(
         on the registry.
         """
 
-        @functools.cache  # to minimize the registry queries
+        @functools.lru_cache(maxsize=None)  # to minimize the registry queries
         def mapping_fn(item_cls: Callable) -> Optional[Callable]:
             page_object_cls: Optional[Type[ItemPage]] = self.registry.page_cls_for_item(
                 request.url, cast(type, item_cls)