diff --git a/lib/utils.ts b/lib/utils.ts
index 7a031f2..ac72bbb 100644
--- a/lib/utils.ts
+++ b/lib/utils.ts
@@ -1,5 +1,10 @@
 import { User } from "@/types/user";
 
+// Single source of truth for product type labels lives in types/product.ts
+// (kept in sync with the backend Product::TYPES). Re-exported here so existing
+// `@/lib/utils` imports keep working without a divergent (previously wrong) map.
+export { getProductTypeLabel } from "@/types/product";
+
 export const formatDate = (dateString: string | null): string => {
     if (!dateString) return 'نامشخص';
 
@@ -20,16 +25,6 @@ export const formatPrice = (price: number | null): string => {
     return new Intl.NumberFormat('fa-IR').format(price);
 };
 
-export const getProductTypeLabel = (type: number | null): string => {
-    const types: Record<number, string> = {
-        1: 'ماهیانه',
-        2: 'سه ماهه',
-        3: 'شش ماهه',
-        4: 'سالیانه',
-    };
-    return type && types[type] ? types[type] : 'نامشخص';
-};
-
 export const getFullName = (user: User): string => {
     if (user.full_name) return user.full_name;
 
diff --git a/types/product.ts b/types/product.ts
index 07a9101..09373e7 100644
--- a/types/product.ts
+++ b/types/product.ts
@@ -35,7 +35,8 @@ export const PRODUCT_TYPES = {
     1: 'دائمی',
     2: 'سالیانه',
     3: '۶ ماهه',
-    4: 'ماهیانه'
+    4: 'ماهیانه',
+    5: 'سه ماهه'
 } as const;
 
 export type ProductType = keyof typeof PRODUCT_TYPES;