Deserialization throws InvalidCastException if POCO has added additional property after serialization.

[nsatyanarayana-conga]

I am using Hyperion 0.9.15 and testing below scenario.

Created POCO object and did serialization and stored stream in file stream. Then I have added another new property and try to
de-serialize it where I am getting InvalidCastException. I tried with versiontolerance enabled and disabled having same issue.

Is this problem may be related to Hyperion or something i'm missing?. Guide me how to solve my issue if I am missing any configuration.
----------------------------POCO--------------------

    public class Employee
    {
        public string Name { get; set; }

        public double Salary { get; set; }

    }

------------------------Serialize to File---------------------------------

      public void FileSerialize()
        {
            var employee = new Employee
            {
                Name = "Foo",
                Salary = 2500.0
            };
            var fileName = @"C:\FromDDrive\words.txt";
            using FileStream fs = File.OpenWrite(fileName);

            _serializer.Serialize(employee, fs);
            Assert.NotNull(fs);
        }

-----------------------------Updated POCO----------------

 public class Employee
 {
        public string Name { get; set; }
        public double Salary { get; set; }
      public int Age { get; set; }
 }

-----------------De-serialize------------------------------------

public void FileSerializeRead()
        {

            var fileName = @"C:\FromDDrive\words.txt";
            using FileStream fs = File.OpenRead(fileName);

            //_serializer.Serialize(employee, fs);
            //fs.Position = 0;
            var actual = _serializer.Deserialize<Employee>(fs);
            Assert.Equal(employee.Name, actual.Name);
            Assert.NotNull(fs);
        }