Assembly 'EntityFramModel' uses EntityFramework 5.0 which has a higher version thhan the referenced assembly

Hello In my solution I've' got a class library named 'EntityFrameworkModel' AND here i add ADO.NET ENTITY DATA MODEL. So my .edmx model perfectly created.

In my other project in this solution - which is asp,net project, in my web form here is what I do

1.I add the reference to my class library with the .edmx model

2.I add the

using EntityFramModel  

3. I make one really simple function which I call in Page_Load

public void LoadTourists()

{           
    var db = new excursionEntities();

    foreach (var tourist in db.Tourists)
    {
        lblproba.Text += tourist.Name_kir.ToString();  
    }
}

And I keep getting the error:

Assembly 'EntityFramModel, Version=1.0.0.0, uses 'EntityFramework, Version=5.0.0.0, which has a higher version than referenced assembly 'EntityFramework, Version=4.4.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' e:\New folder\EntityFramModel\bin\Debug\EntityFramModel.dll Tanya_Marinova_FN_0801262079_reservation_system