diff --git a/stac_fastapi/pgstac/app.py b/stac_fastapi/pgstac/app.py
index 5dd37b1d..9946c08c 100644
--- a/stac_fastapi/pgstac/app.py
+++ b/stac_fastapi/pgstac/app.py
@@ -88,10 +88,7 @@
     extensions=extensions + [collection_search_extension]
     if collection_search_extension
     else extensions,
-    client=CoreCrudClient(
-        post_request_model=post_request_model,  # type: ignore
-        collections_get_request_model=collections_get_request_model,  # type: ignore
-    ),
+    client=CoreCrudClient(post_request_model=post_request_model),  # type: ignore
     response_class=ORJSONResponse,
     items_get_request_model=items_get_request_model,
     search_get_request_model=get_request_model,
diff --git a/stac_fastapi/pgstac/core.py b/stac_fastapi/pgstac/core.py
index a9d1ba1d..e7dcab21 100644
--- a/stac_fastapi/pgstac/core.py
+++ b/stac_fastapi/pgstac/core.py
@@ -14,7 +14,7 @@
 from pygeofilter.backends.cql2_json import to_cql2
 from pygeofilter.parsers.cql2_text import parse as parse_cql2_text
 from pypgstac.hydration import hydrate
-from stac_fastapi.api.models import APIRequest, EmptyRequest, JSONResponse
+from stac_fastapi.api.models import JSONResponse
 from stac_fastapi.types.core import AsyncBaseCoreClient, Relations
 from stac_fastapi.types.errors import InvalidQueryParameter, NotFoundError
 from stac_fastapi.types.requests import get_base_url
@@ -39,8 +39,6 @@
 class CoreCrudClient(AsyncBaseCoreClient):
     """Client for core endpoints defined by stac."""
 
-    collections_get_request_model: APIRequest = attr.ib(default=EmptyRequest)
-
     async def all_collections(  # noqa: C901
         self,
         request: Request,
diff --git a/tests/conftest.py b/tests/conftest.py
index 17bfdf63..fc63514f 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -155,10 +155,7 @@ def api_client(request, database):
     api = StacApi(
         settings=api_settings,
         extensions=extensions + [collection_search_extension],
-        client=CoreCrudClient(
-            post_request_model=search_post_request_model,
-            collections_get_request_model=collections_get_request_model,
-        ),
+        client=CoreCrudClient(post_request_model=search_post_request_model),
         items_get_request_model=items_get_request_model,
         search_get_request_model=search_get_request_model,
         search_post_request_model=search_post_request_model,