diff --git a/backend/cmd/server/VERSION b/backend/cmd/server/VERSION
index 02cbcb2530..ce740ef806 100644
--- a/backend/cmd/server/VERSION
+++ b/backend/cmd/server/VERSION
@@ -1 +1 @@
-0.1.108.50
+0.1.108.51
diff --git a/frontend/src/api/admin/settings.ts b/frontend/src/api/admin/settings.ts
index dce9d1d90a..b6c9779456 100644
--- a/frontend/src/api/admin/settings.ts
+++ b/frontend/src/api/admin/settings.ts
@@ -88,6 +88,21 @@ export interface SystemSettings {
   // Gateway forwarding behavior
   enable_fingerprint_unification: boolean
   enable_metadata_passthrough: boolean
+
+  // Payment configuration
+  payment_enabled: boolean
+  payment_min_amount: number
+  payment_max_amount: number
+  payment_daily_limit: number
+  payment_order_timeout_minutes: number
+  payment_max_pending_orders: number
+  payment_enabled_types: string[]
+  payment_balance_disabled: boolean
+  payment_load_balance_strategy: string
+  payment_product_name_prefix: string
+  payment_product_name_suffix: string
+  payment_help_image_url: string
+  payment_help_text: string
 }
 
 export interface UpdateSettingsRequest {