diff --git a/tox.ini b/tox.ini
index 0a2a534..9f14681 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,6 +7,8 @@ envlist =
     docs
 
 [testenv]
+setenv =
+	PYTHONWARNINGS = all
 deps =
     coverage == 3.6
     django18: Django >= 1.8, < 1.9