diff --git a/defaults/main.yml b/defaults/main.yml
index 6a34953..599e2b0 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -4,6 +4,7 @@ cat_user: cat
 
 cat_postgres_db: cat
 cat_postgres_user: cat_user
+cat_postgres_db_port: 5432
 
 # sensitive info
 cat_postgres_password: "{{ vault_cat_postgres_password }}"
diff --git a/templates/start.sh b/templates/start.sh
index 2c6d189..b0c07dc 100644
--- a/templates/start.sh
+++ b/templates/start.sh
@@ -2,7 +2,7 @@
 
 # Run the java jar
 
-DATABASE_URL="postgresql://localhost:5432/{{ cat_postgres_db }}?user={{ cat_postgres_user }}&password={{ cat_postgres_password }}"
+DATABASE_URL="postgresql://localhost:{{ cat_postgres_db_port }}/{{ cat_postgres_db }}?user={{ cat_postgres_user }}&password={{ cat_postgres_password }}"
 PORT="{{ cat_app_port }}"
 AUTHORIZE-URI="{{ authorize_uri }}"
 ACCESS-TOKEN-URI="{{ access-token-uri }}"