diff --git a/src/testing/scanpy/_pytest/__init__.py b/src/testing/scanpy/_pytest/__init__.py
index dbaabdf77e..02b2263c7d 100644
--- a/src/testing/scanpy/_pytest/__init__.py
+++ b/src/testing/scanpy/_pytest/__init__.py
@@ -51,7 +51,9 @@ def original_settings(
 
     setup()
     if pkg_version("anndata") >= Version("0.12"):
-        ad.settings.zarr_write_format = 3  # default in anndata 0.13, warns otherwise
+        if pkg_version("anndata") < Version("0.13"):
+            ad.settings.zarr_write_format = 3
+        ad.settings.auto_shard_zarr_v3 = True
     sc.settings.logfile = sys.stderr
     sc.settings.verbosity = "hint"
     sc.settings.autoshow = True
diff --git a/tests/conftest.py b/tests/conftest.py
index eb488f8a04..440ba69bdb 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -7,12 +7,9 @@
 from textwrap import dedent
 from typing import TYPE_CHECKING, TypedDict, cast
 
-import anndata as ad
 import pytest
-from packaging.version import Version
 
 # just import for the IMPORTED check
-from scanpy._compat import pkg_version
 
 if TYPE_CHECKING:  # So editors understand that we’re using those fixtures
     import os
@@ -141,10 +138,3 @@ def plt():
 def exit_stack() -> Generator[ExitStack]:
     with ExitStack() as stack:
         yield stack
-
-
-@pytest.fixture(autouse=True)
-def anndata_settings():
-    if pkg_version("anndata") >= Version("0.12"):
-        ad.settings.auto_shard_zarr_v3 = True
-        ad.settings.zarr_write_format = 3