diff --git a/cinema/serializers.py b/cinema/serializers.py
index 070971ea5..912ea0a4f 100644
--- a/cinema/serializers.py
+++ b/cinema/serializers.py
@@ -12,21 +12,25 @@ class MovieSerializer(serializers.ModelSerializer):
     class Meta:
         model = Movie
         fields = ("id", "title", "description", "duration")
+        read_only_fields = ("id",)
 
 
 class GenreSerializer(serializers.ModelSerializer):
     class Meta:
         model = Genre
         fields = ("id", "name")
+        read_only_fields = ("id",)
 
 
 class CinemaHallSerializer(serializers.ModelSerializer):
     class Meta:
         model = CinemaHall
         fields = ("id", "name", "rows", "seats_in_row")
+        read_only_fields = ("id",)
 
 
 class ActorSerializer(serializers.ModelSerializer):
     class Meta:
         model = Actor
         fields = ("id", "first_name", "last_name")
+        read_only_fields = ("id",)