diff --git a/server/src/nest/common/managed.ts b/server/src/nest/common/managed.ts
index e1c265376..bfd41c87b 100644
--- a/server/src/nest/common/managed.ts
+++ b/server/src/nest/common/managed.ts
@@ -88,6 +88,7 @@ export const MANAGED_LOCKED_SETTING_KEYS = [
   'oidc_login',
   'oidc_registration',
   'openweather_api_key',
+  'routing_base_url',
   'smtp_from',
   'smtp_host',
   'smtp_pass',
diff --git a/server/tests/unit/nest/managed-keys.test.ts b/server/tests/unit/nest/managed-keys.test.ts
index 8b4bb0986..a8b2391b8 100644
--- a/server/tests/unit/nest/managed-keys.test.ts
+++ b/server/tests/unit/nest/managed-keys.test.ts
@@ -62,6 +62,7 @@ describe('managed key assignment', () => {
       'oidc_login',
       'oidc_registration',
       'openweather_api_key',
+      'routing_base_url',
       'smtp_from',
       'smtp_host',
       'smtp_pass',