diff --git a/crates/cuddle-clusters/src/catalog.rs b/crates/cuddle-clusters/src/catalog.rs
index 591d488..fb78f7b 100644
--- a/crates/cuddle-clusters/src/catalog.rs
+++ b/crates/cuddle-clusters/src/catalog.rs
@@ -98,7 +98,7 @@ metadata:
   name: {{ vars.cuddle_crdb.file_name(vars.cuddle_vars.service) }}
   namespace:  {{ vars.cluster_vars.namespace }}
 data:
-  DATABASE_URL: postgresql://root@{{environment}}-cluster:26257/{{ vars.cuddle_vars.service }}
+  DATABASE_URL: postgresql://root@{{environment}}-cluster:26257/{{ vars.cuddle_vars.service | replace("-", "_") }}
                         "#
                     .into(),
                 )));