diff --git a/docs/swagger/swagger-spec.json b/docs/swagger/swagger-spec.json
index 2751e71..94438f6 100644
--- a/docs/swagger/swagger-spec.json
+++ b/docs/swagger/swagger-spec.json
@@ -2304,7 +2304,7 @@
             "description": "Employee`s email"
           },
           "phone_number": {
-            "type": "number",
+            "type": "string",
             "example": "82538437464",
             "description": "Employee`s phone number"
           },
@@ -2389,7 +2389,7 @@
             "description": "Employee`s email"
           },
           "phone_number": {
-            "type": "number",
+            "type": "string",
             "example": "82538437464",
             "description": "Employee`s phone number"
           },
@@ -2834,7 +2834,7 @@
             "description": "Customer`s email"
           },
           "phone_number": {
-            "type": "number",
+            "type": "string",
             "example": "8436637464",
             "description": "Customer`s phone number"
           },
@@ -2887,7 +2887,7 @@
             "description": "Customer`s email"
           },
           "phone_number": {
-            "type": "number",
+            "type": "string",
             "example": "8436637464",
             "description": "Customer`s phone number"
           },
diff --git a/src/modules/customers/dtos/create-customer.dto.ts b/src/modules/customers/dtos/create-customer.dto.ts
index bc35918..24289f8 100644
--- a/src/modules/customers/dtos/create-customer.dto.ts
+++ b/src/modules/customers/dtos/create-customer.dto.ts
@@ -55,10 +55,9 @@ export class CreateCustomerDto {
         example: '8436637464',
         description: 'Customer`s phone number',
     })
-    @Type(() => Number)
-    @IsInt()
+    @IsString()
     @IsPositive()
-    phone_number: number;
+    phone_number: string;
 
     @ApiProperty({
         example: '1 Ringbearer`s way, Mount Doom city, ME, T1R 1N6 ',