diff --git a/python/pylibraft/pyproject.toml b/python/pylibraft/pyproject.toml
index 3e8ca0b6d3..df1001538e 100644
--- a/python/pylibraft/pyproject.toml
+++ b/python/pylibraft/pyproject.toml
@@ -116,3 +116,8 @@ wheel.packages = ["pylibraft"]
 provider = "scikit_build_core.metadata.regex"
 input = "pylibraft/VERSION"
 regex = "(?P<value>.*)"
+
+[tool.pytest.ini_options]
+filterwarnings = [
+    "error",
+]
diff --git a/python/raft-dask/pytest.ini b/python/raft-dask/pytest.ini
index 5559bb08c8..880016d211 100644
--- a/python/raft-dask/pytest.ini
+++ b/python/raft-dask/pytest.ini
@@ -1,4 +1,6 @@
 [pytest]
+filterwarnings =
+    error
 markers =
   unit: marks unit tests
   quality: marks quality tests