diff --git a/setup.cfg b/setup.cfg
index 7aedffd..fee0ea5 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -3,7 +3,7 @@ universal=1
 
 [tool:pytest]
 addopts =
-    -v
+    -v -Wd
 minversion =
     3.0.2
 testpaths =