diff --git a/pyproject.toml b/pyproject.toml
index 29ef0bf..53d3433 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -127,7 +127,7 @@ exclude_lines = [
 ignore = ["PY005", "PY007", "PP302", "PP308", "PP309", "GH103", "GH212", "PC111", "PC140", "PC160", "PC170", "PC180", "MY100", "RF103"]
 
 [tool.pytest.ini_options]
-addopts = "-ra --strict-config --strict-markers --cov=numcodecs --cov-report xml --doctest-modules --doctest-glob=*.pyx"
+addopts = "-ra --strict-config --strict-markers --doctest-modules --doctest-glob=*.pyx"
 doctest_optionflags = [
     "NORMALIZE_WHITESPACE",
     "ELLIPSIS",