diff --git a/charms/gnocchi-k8s/test-requirements.txt b/charms/gnocchi-k8s/test-requirements.txt
index d1a61d34..276e5bee 100644
--- a/charms/gnocchi-k8s/test-requirements.txt
+++ b/charms/gnocchi-k8s/test-requirements.txt
@@ -7,3 +7,5 @@ mock
 flake8
 stestr
 ops
+# Subunit 1.4.3+ requires extras
+extras