diff --git a/odex25_project/project_base/models/project_task.py b/odex25_project/project_base/models/project_task.py
index 8959bfec8..4018ba9c7 100644
--- a/odex25_project/project_base/models/project_task.py
+++ b/odex25_project/project_base/models/project_task.py
@@ -56,8 +56,7 @@ class ProjectTask(models.Model):
                     _("Total planned hours for all tasks in stage %s must not exceed Total stage hours %s") % (
                         record.phase_id.display_name, record.phase_hours))
 
-    @api.onchange('stage_id', 'stage_id.is_closed')
-    def _compute_stage(self):
+    def _send_state_change_notification(self):
         manager_users = self.env.ref('project.group_project_manager').users
         department_manager_users = self.env.ref('project_base.group_project_department_manager').users
         # Combine both user sets
@@ -75,3 +74,7 @@ class ProjectTask(models.Model):
                 'author_id': self.env.user.partner_id and self.env.user.partner_id.id
         })
 
+    @api.onchange('stage_id', 'stage_id.is_closed')
+    def _compute_stage(self):
+        self._send_state_change_notification()
+