diff --git a/golem_season/models/golem_season.py b/golem_season/models/golem_season.py
index a16d2fe..7796569 100644
--- a/golem_season/models/golem_season.py
+++ b/golem_season/models/golem_season.py
@@ -28,6 +28,8 @@ class GolemSeason(models.Model):
                          _('This season name has already been used.'))]
 
     name = fields.Char('Season name', copy=False)
+
+    membership_id = fields.Many2one('product.product', 'Membership type')
     member_counter = fields.Integer('Counter for member number generation',
                                     readonly=True, default=1)
     date_start = fields.Date('Period start')
diff --git a/golem_season/views/golem_season_views.xml b/golem_season/views/golem_season_views.xml
index 19d2958..4aaf56d 100644
--- a/golem_season/views/golem_season_views.xml
+++ b/golem_season/views/golem_season_views.xml
@@ -35,6 +35,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
             </div>
             <group string="Season">
               <field name="is_default" invisible="True" />
+              <field name="membership_id" />
               <field name="name" />
               <field name="date_start" />
               <field name="date_end" />