diff --git a/pyproject.toml b/pyproject.toml
index 9dbac6a..80e3004 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -84,4 +84,4 @@ ignore = "D100,D102,D104,D105,D106,D107,D203,D204,D213,D413"
 [tool.pytest.ini_options]
 doctest_optionflags = "NORMALIZE_WHITESPACE NUMBER"
 addopts = "  --cov=opera_utils  --doctest-modules --randomly-seed=1234 --ignore=scripts --ignore=docs"
-filterwarnings = ["ignore::UserWarning:h5py is running against HDF5.*", "error"]
+filterwarnings = ["error", "ignore:h5py is running against HDF5.*:UserWarning"]