diff --git a/codecov.yml b/codecov.yml
index 56a68e6..d67d97d 100644
--- a/codecov.yml
+++ b/codecov.yml
@@ -1,5 +1,4 @@
 codecov:
-  config: codecov.yml
   require_ci_to_pass: false
 
 coverage:
@@ -11,7 +10,8 @@ coverage:
         target: 90%
         informational: true
   ignore:
-    - "xmitgcm/test/test_llcreader.py"
+    - "xmitgcm/test/*"
+    - "xmitgcm/__init__.py"
     - "setup.py"
     - "xmitgcm/llcreader/*"
 
diff --git a/xmitgcm/test/test_xmitgcm_common.py b/xmitgcm/test/test_xmitgcm_common.py
index 5c7cbd8..866a768 100644
--- a/xmitgcm/test/test_xmitgcm_common.py
+++ b/xmitgcm/test/test_xmitgcm_common.py
@@ -1,5 +1,6 @@
 import pytest
 import os
+import sys
 import fnmatch
 import tarfile
 import numpy as np
@@ -249,7 +250,10 @@ def untar(data_dir, basename, target_dir):
     if not os.path.exists(datafile):
         raise IOError('Could not find data file %s' % datafile)
     tar = tarfile.open(datafile)
-    tar.extractall(target_dir)
+    if sys.version >= '3.12':
+        tar.extractall(target_dir,filter='data')
+    else:
+        tar.extractall(target_dir)
     tar.close()
     # subdirectory where file should have been untarred.
     # assumes the directory is the same name as the tar file itself.