diff --git a/tox.ini b/tox.ini
index c5763ea2..d8b653ac 100644
--- a/tox.ini
+++ b/tox.ini
@@ -155,3 +155,6 @@ testpaths =
 	ipfshttpclient
 	test/unit
 	test/functional
+
+markers =
+    last: marker supplied by but not registered by pytest-ordering module