diff --git a/src/Interfaces/IContact.ts b/src/Interfaces/IContact.ts
index d1390c9..b6ff7c8 100644
--- a/src/Interfaces/IContact.ts
+++ b/src/Interfaces/IContact.ts
@@ -18,10 +18,10 @@ export default class IContact {
   public email!: string;
 
   @IsOptional()
-  public phone_number!: Date;
+  public phone_number!: string;
 
   @IsOptional()
-  public cell_phone_number!: Date;
+  public cell_phone_number!: string;
 
   @IsEnum(ECivility)
   public civility!: ECivility;