diff --git a/tests/bundles/jammy-vault.yaml b/tests/bundles/jammy-vault.yaml
index 9cbb135a..717c9815 100644
--- a/tests/bundles/jammy-vault.yaml
+++ b/tests/bundles/jammy-vault.yaml
@@ -27,7 +27,7 @@ services:
     series: bionic
     charm: ch:vault
     to:
-      - '4'
+      - '3'
     channel: latest/edge
 relations:
 - - vault:shared-db