diff --git a/charms/ovn-relay-k8s/requirements.txt b/charms/ovn-relay-k8s/requirements.txt
index 3b0b7b4a..9211d667 100644
--- a/charms/ovn-relay-k8s/requirements.txt
+++ b/charms/ovn-relay-k8s/requirements.txt
@@ -10,4 +10,5 @@ jsonschema
 lightkube
 lightkube-models
 ops
+
 git+https://opendev.org/openstack/charm-ops-sunbeam#egg=ops_sunbeam
diff --git a/charms/ovn-relay-k8s/test-requirements.txt b/charms/ovn-relay-k8s/test-requirements.txt
index 0b8c885e..da3b04b7 100644
--- a/charms/ovn-relay-k8s/test-requirements.txt
+++ b/charms/ovn-relay-k8s/test-requirements.txt
@@ -8,3 +8,5 @@ coverage
 mock
 stestr
 ops
+# Subunit 1.4.3+ requires extras
+extras
diff --git a/charms/ovn-relay-k8s/tests/bundles/smoke.yaml b/charms/ovn-relay-k8s/tests/bundles/smoke.yaml
index 34ff9b10..a536819f 100644
--- a/charms/ovn-relay-k8s/tests/bundles/smoke.yaml
+++ b/charms/ovn-relay-k8s/tests/bundles/smoke.yaml
@@ -67,11 +67,10 @@ applications:
     resources:
       ovn-sb-db-server-image: ghcr.io/openstack-snaps/ovn-consolidated:23.03
   tls-operator:
-    charm: tls-certificates-operator
+    charm: self-signed-certificates
     channel: edge
     scale: 1
     options:
-      generate-self-signed-certificates: true
       ca-common-name: internal-ca
 
 relations: