diff --git a/setup.py b/setup.py
index 0f92d5b7..f15eb7fc 100644
--- a/setup.py
+++ b/setup.py
@@ -9,9 +9,9 @@
     "attrs",
     "orjson",
     "pydantic",
-    "stac-fastapi.api>=5.2,<6.0",
-    "stac-fastapi.extensions>=5.2,<6.0",
-    "stac-fastapi.types>=5.2,<6.0",
+    "stac-fastapi.api>=6.0,<7.0",
+    "stac-fastapi.extensions>=6.0,<7.0",
+    "stac-fastapi.types>=6.0,<7.0",
     "asyncpg",
     "buildpg",
     "brotli_asgi",
diff --git a/stac_fastapi/pgstac/transactions.py b/stac_fastapi/pgstac/transactions.py
index b4a68c40..27d3ae03 100644
--- a/stac_fastapi/pgstac/transactions.py
+++ b/stac_fastapi/pgstac/transactions.py
@@ -2,18 +2,23 @@
 
 import logging
 import re
-from typing import Optional, Union
+from typing import List, Optional, Union
 
 import attr
 from buildpg import render
 from fastapi import HTTPException, Request
+from stac_fastapi.extensions.core.transaction import AsyncBaseTransactionsClient
+from stac_fastapi.extensions.core.transaction.request import (
+    PartialCollection,
+    PartialItem,
+    PatchOperation,
+)
 from stac_fastapi.extensions.third_party.bulk_transactions import (
     AsyncBaseBulkTransactionsClient,
     BulkTransactionMethod,
     Items,
 )
 from stac_fastapi.types import stac as stac_types
-from stac_fastapi.types.core import AsyncBaseTransactionsClient
 from stac_pydantic import Collection, Item, ItemCollection
 from starlette.responses import JSONResponse, Response
 
@@ -203,6 +208,25 @@ async def delete_collection(
 
         return JSONResponse({"deleted collection": collection_id})
 
+    async def patch_item(
+        self,
+        collection_id: str,
+        item_id: str,
+        patch: Union[PartialItem, List[PatchOperation]],
+        **kwargs,
+    ) -> Optional[Union[stac_types.Item, Response]]:
+        """Patch Item."""
+        raise NotImplementedError
+
+    async def patch_collection(
+        self,
+        collection_id: str,
+        patch: Union[PartialCollection, List[PatchOperation]],
+        **kwargs,
+    ) -> Optional[Union[stac_types.Collection, Response]]:
+        """Patch Collection."""
+        raise NotImplementedError
+
 
 @attr.s
 class BulkTransactionsClient(AsyncBaseBulkTransactionsClient, ClientValidateMixIn):
diff --git a/stac_fastapi/pgstac/types/search.py b/stac_fastapi/pgstac/types/search.py
index 2ccc5c14..90c200ce 100644
--- a/stac_fastapi/pgstac/types/search.py
+++ b/stac_fastapi/pgstac/types/search.py
@@ -18,7 +18,7 @@ class PgstacSearch(BaseSearchPostRequest):
     @classmethod
     def validate_query_uses_cql(cls, v: str, info: ValidationInfo):
         """Use of Query Extension is not allowed with cql2."""
-        if info.data.get("query", None) is not None and v != "cql-json":
+        if info.data.get("query", None) is not None:
             raise ValueError(
                 "Query extension is not available when using pgstac with cql2"
             )
diff --git a/tests/resources/test_item.py b/tests/resources/test_item.py
index ae9eb450..a97077fb 100644
--- a/tests/resources/test_item.py
+++ b/tests/resources/test_item.py
@@ -1356,52 +1356,6 @@ async def test_preserves_extra_link(
     assert extra_link[0]["href"] == expected_href
 
 
-async def test_item_search_post_filter_extension_cql_explicitlang(
-    app_client, load_test_data, load_test_collection
-):
-    """Test POST search with JSONB query (cql json filter extension)"""
-    test_item = load_test_data("test_item.json")
-    resp = await app_client.post(
-        f"/collections/{test_item['collection']}/items", json=test_item
-    )
-    assert resp.status_code == 201
-
-    # EPSG is a JSONB key
-    params = {
-        "collections": [test_item["collection"]],
-        "filter-lang": "cql-json",
-        "filter": {
-            "gt": [
-                {"property": "proj:epsg"},
-                test_item["properties"]["proj:epsg"] + 1,
-            ]
-        },
-    }
-    resp = await app_client.post("/search", json=params)
-    resp_json = resp.json()
-
-    assert resp.status_code == 200
-    assert len(resp_json.get("features")) == 0
-
-    params = {
-        "collections": [test_item["collection"]],
-        "filter-lang": "cql-json",
-        "filter": {
-            "eq": [
-                {"property": "proj:epsg"},
-                test_item["properties"]["proj:epsg"],
-            ]
-        },
-    }
-    resp = await app_client.post("/search", json=params)
-    resp_json = resp.json()
-    assert len(resp.json()["features"]) == 1
-    assert (
-        resp_json["features"][0]["properties"]["proj:epsg"]
-        == test_item["properties"]["proj:epsg"]
-    )
-
-
 async def test_item_search_post_filter_extension_cql2_2(
     app_client, load_test_data, load_test_collection
 ):
@@ -1622,26 +1576,6 @@ async def test_get_filter_extension(app_client, load_test_data, load_test_collec
     assert len(fc["features"]) == 1
     assert fc["features"][0]["id"] == search_id
 
-    # CQL-JSON
-    resp = await app_client.get(
-        "/search",
-        params={
-            "filter-lang": "cql-json",
-            "filter": json.dumps(
-                {
-                    "eq": [
-                        {"property": "id"},
-                        search_id,
-                    ],
-                },
-            ),
-        },
-    )
-    assert resp.status_code == 200
-    fc = resp.json()
-    assert len(fc["features"]) == 1
-    assert fc["features"][0]["id"] == search_id
-
     # CQL2-TEXT
     resp = await app_client.get(
         "/search",
@@ -1669,26 +1603,6 @@ async def test_get_filter_extension(app_client, load_test_data, load_test_collec
     assert len(fc["features"]) == 1
     assert fc["features"][0]["id"] == search_id
 
-    # CQL-JSON
-    resp = await app_client.get(
-        f"/collections/{collection_id}/items",
-        params={
-            "filter-lang": "cql-json",
-            "filter": json.dumps(
-                {
-                    "eq": [
-                        {"property": "id"},
-                        search_id,
-                    ],
-                },
-            ),
-        },
-    )
-    assert resp.status_code == 200
-    fc = resp.json()
-    assert len(fc["features"]) == 1
-    assert fc["features"][0]["id"] == search_id
-
     # CQL2-TEXT
     resp = await app_client.get(
         f"/collections/{collection_id}/items",