diff --git a/tox.ini b/tox.ini
index 87f88ce22..cc2692bb2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -290,4 +290,4 @@ commands_pre =
     pip freeze
 commands =
     pytest dkist \
-        -W "ignore:asdf.extensions plugin from package gwcs==0.18.3:asdf.exceptions.AsdfWarning"
+        -W "ignore:Converter handles multiple tags for this extension:asdf.exceptions.AsdfWarning"