diff --git a/tests/test_client.py b/tests/test_client.py
deleted file mode 100644
index b35f9ac..0000000
--- a/tests/test_client.py
+++ /dev/null
@@ -1,5 +0,0 @@
-from pystac_client import Client
-
-def test_cmip6():
-    """Assume some CMIP6 has been ingested."""
-    c = Client.open("http://localhost:8880/stac")
diff --git a/tests/test_cmip6_extension.py b/tests/test_cmip6_extension.py
deleted file mode 100644
index f899a33..0000000
--- a/tests/test_cmip6_extension.py
+++ /dev/null
@@ -1,20 +0,0 @@
-from STACpopulator.extensions import cmip6
-from STACpopulator.stac_utils import CFJsonItem
-import xncml
-from pathlib import Path
-from pystac import Item, validation
-
-TEST_DATA = Path(__file__).parent / "data"
-
-def test_extension():
-    ds = xncml.Dataset(TEST_DATA / "o3_Amon_GFDL-ESM4_historical_r1i1p1f1_gr1_185001-194912.xml")
-    attrs = ds.to_cf_dict()
-
-    item = CFJsonItem("test", attrs).item
-    validation.validate(item)
-
-    ext = cmip6.CMIP6Extension.ext(item, add_if_missing=True)
-    ext.apply(attrs["attributes"])
-    assert "cmip6:realm" in item.properties
-
-