diff --git a/charm-packages/cmr_relation_vnf/juju-bundles/bundle.yaml b/charm-packages/cmr_relation_vnf/juju-bundles/bundle.yaml
index 170e64badc517a44ba115b8a92878e90a403f07b..26f19b3df59632c37f686967cc95796e742368ba 100644
--- a/charm-packages/cmr_relation_vnf/juju-bundles/bundle.yaml
+++ b/charm-packages/cmr_relation_vnf/juju-bundles/bundle.yaml
@@ -1,5 +1,6 @@
 description: Bundle with a charm providing an endpoint
 bundle: kubernetes
+series: focal
 applications:
   provides:
     charm: './charms/provides.charm'