diff --git a/app/main.py b/app/main.py
index 8f08d6659..1a4ddb181 100644
--- a/app/main.py
+++ b/app/main.py
@@ -4,7 +4,7 @@
 from app.cinema.hall import CinemaHall
 
 
-def cinema_visit(customers: list,
+def cinema_visit(customers: list[dict],
                  hall_number: int,
                  cleaner: str,
                  movie: str) -> None: