diff --git a/pyproject.toml b/pyproject.toml
index 67589b93..5282e4cb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -111,3 +111,7 @@ known-third-party = [
   "glue",
 ]
 known-first-party = ["yt", "yt_astro_analysis"]
+
+
+[tool.pytest]
+filterwarnings = ["error"]