diff --git a/setup.cfg b/setup.cfg
index 3501b514..0d6dee92 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -63,7 +63,7 @@ glue_jupyter.icons = *.svg
 # -Wignore: See https://github.com/glue-viz/glue-jupyter/issues/237
 # -s: Disable stdout capturing
 filterwarnings =
-    # error::DeprecationWarning
+    error::DeprecationWarning
     ignore:the imp module is deprecated:DeprecationWarning:glue.config.*:
     ignore:`np.float` is a deprecated alias:DeprecationWarning:glue.*:
     # possibly more serious issue with overlapping memory in glue/utils/array.py:30: unbroadcast