After saving object in django admin how to display it in foreign key inlining dropdown

Question

When we save foreign key object from django admin. As following screenshot

click here to see the screenshot

Newly created object will get saved but not been able to display at same time in dropdown list.

We have measurement model which has material and product foreign key as showed in following snippet.

So I want when object is created it should display the newly created option in foreign key dropdown. Please suggest how do I do that.

Here is my code snippet

models.py

class MaterialName(models.Model):
    material_name =  models.CharField(max_length=150, default=None, null=True, unique=True)

class Product(models.Model):
    product_name = models.CharField(max_length=100)

class Measurement(models.Model):    
    product = models.ForeignKey(Product,default=None, null=True, related_name='Measurement')
    material_name = models.ForeignKey(MaterialName,default=None, blank=Blank, related_name='materialname')

admin.py

class MaterialTypeAdmin(admin.ModelAdmin):
    model = MaterialType
    list_display = ('material_type',)

class ProductAdmin(admin.ModelAdmin):
    model = Product
    inlines = [MaterialTypeAdminInline,]