diff --git a/modules/production/stock.py b/modules/production/stock.py
index bc0a272aca..242c6ea37e 100644
--- a/modules/production/stock.py
+++ b/modules/production/stock.py
@@ -89,6 +89,7 @@ class Move(metaclass=PoolMeta):
                         | (t.production_output == Null))),
                 'production.msg_stock_move_production_single'),
             ]
+        cls._allow_modify_closed_period.add('production_cost_price_updated')
 
     @fields.depends(
         'production_output', '_parent_production_output.company',