diff --git a/setup.cfg b/setup.cfg
index bb47d64cd..247831128 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -43,6 +43,8 @@ where = src
 
 [tool:pytest]
 testpaths = tests
+filterwarnings =
+    error
 
 [coverage:run]
 branch = True