diff --git a/cubedash/_stac.py b/cubedash/_stac.py
index e917edd84..5a8cb8413 100644
--- a/cubedash/_stac.py
+++ b/cubedash/_stac.py
@@ -96,6 +96,7 @@ def root():
     return _stac_response(
         dict(
             **stac_endpoint_information(),
+            type="Catalog",
             links=[
                 dict(
                     title="Collections",
@@ -383,6 +384,7 @@ def arrivals():
         dict(
             id="Arrivals",
             title="Dataset Arrivals",
+            type="Catalog",
             license="various",
             description="The most recently added Items to this index",
             properties={},
diff --git a/integration_tests/test_stac.py b/integration_tests/test_stac.py
index b3a558d9b..ea8257fd4 100644
--- a/integration_tests/test_stac.py
+++ b/integration_tests/test_stac.py
@@ -598,6 +598,7 @@ def test_huge_page_request(stac_client: FlaskClient):
 
 def test_stac_collections(stac_client: FlaskClient):
     response = get_json(stac_client, "/stac")
+    _CATALOG_SCHEMA.validate(response)
 
     assert response["id"] == "odc-explorer", "Expected default unconfigured endpoint id"
     assert (
@@ -662,6 +663,22 @@ def test_stac_collections(stac_client: FlaskClient):
     )
 
 
+def test_arrivals_page_validation(stac_client: FlaskClient):
+    # Does the virtual 'arrivals' catalog validate?
+    # (this is actually not tested in the above root-catalog, surprisingly, as it has no expected dataset count.)
+    arrivals_collection = get_json(stac_client, "/stac/arrivals")
+    _CATALOG_SCHEMA.validate(arrivals_collection)
+
+    [items_page_url] = [
+        i["href"] for i in arrivals_collection["links"] if i["rel"] == "items"
+    ]
+
+    # Get and validate items.
+    response = get_items(stac_client, items_page_url)
+    # Sanity check.
+    assert len(response["features"]) == OUR_PAGE_SIZE
+
+
 def test_stac_collection_items(stac_client: FlaskClient):
     """
     Follow the links to the "high_tide_comp_20p" collection and ensure it includes