diff --git a/app/main.py b/app/main.py
index f9e31db..17653b3 100644
--- a/app/main.py
+++ b/app/main.py
@@ -25,7 +25,7 @@ def health_check():
 
 
 @app.get("/sum")
-def compute_sum(a: int = Query(...), b: int = Query(...)):
+def compute_sum(a: int = Query(...), b: int = Query(...))-> dict[str, int]:
     return {"result": a + b}
 
 
@@ -36,7 +36,6 @@ def format_profile(data):
         "age": data.get("age"),
     }
 
-
 @app.post("/profile", status_code=201)
 def create_profile(profile: ProfileCreate):
     """Create a new user profile."""