diff --git a/dice.py b/dice.py
index e75eaa0..fd91518 100644
--- a/dice.py
+++ b/dice.py
@@ -1,7 +1,6 @@
 import random as rd
-from . import serializable
 
-class Dice(serializable.Serializable):
+class Dice():
     def __init__(self):
         raise TypeError("Un dé ne peut pas être instanciée!")
     
diff --git a/event.py b/event.py
index 78816bc..60e2b00 100644
--- a/event.py
+++ b/event.py
@@ -1,5 +1,5 @@
 from .serializable import Serializable
-from .entity import Action, BonusAction
+from .entity import Action, BonusAction, Entity
 
 import json
 
@@ -15,4 +15,12 @@ class Event(Serializable):
         event_dict['text'] = event_text
         event_dict['action'] = action
         event_dict['bonus'] = bonus
-        self.description += json.dumps(event_dict)
\ No newline at end of file
+        self.description += json.dumps(event_dict)
+    
+    def update_objectives(self, entities:list[Entity], objectives:list[str]):
+        assert len(entities) == len(objectives), f"Number of entities & objectives are different: {len(entities)} (entities) and {len(objectives)} (objectives) !"
+        n = len(entities)
+        for i in range(n):
+            entity_name = entities[i].name
+            objective = objectives[i]
+            self.entities_objectives[entity_name] = objective
\ No newline at end of file