diff --git a/pyproject.toml b/pyproject.toml
index 4e8143c..0d25b0c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,4 +11,7 @@ line_length=80
 sections="FUTURE,STDLIB,THIRDPARTY,OCTODNS,FIRSTPARTY,LOCALFOLDER"
 
 [tool.pytest.ini_options]
+filterwarnings = [
+    'error',
+]
 pythonpath = "."