diff --git a/app/main_test.py b/app/main_test.py
index ac2c55a..b7ff457 100644
--- a/app/main_test.py
+++ b/app/main_test.py
@@ -6,7 +6,7 @@
 
 @app.get("/")
 async def read_main():
-    return {"message": "Hello World"}
+    return {"message": "Hello World!"}
 
 
 client = TestClient(app)