diff --git a/lib/mains/gt.dart b/lib/mains/gt.dart
index 04e6ca2..eae4bf5 100644
--- a/lib/mains/gt.dart
+++ b/lib/mains/gt.dart
@@ -18,7 +18,7 @@ void main() {
     // For widgets to be able to read providers, we need to wrap the entire
     // application in a "ProviderScope" widget.
     // This is where the state of our providers will be stored.
-    ProviderScope(
+    const ProviderScope(
       child: MyApp(),
     ),
   );
@@ -26,6 +26,8 @@ void main() {
 
 // Extend ConsumerWidget instead of StatelessWidget, which is exposed by Riverpod
 class MyApp extends ConsumerWidget {
+  const MyApp({super.key});
+
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     final String value = ref.watch(helloWorldProvider);
@@ -36,9 +38,9 @@ class MyApp extends ConsumerWidget {
         body: Center(
           child: Column(
             children: <Widget>[
-              Expanded(child: Text('1')),
+              const Expanded(child: Text('1')),
               Expanded(child: Text(value)),
-              Expanded(child: RandomWidget())
+              const Expanded(child: RandomWidget())
             ],
           )
 
diff --git a/lib/outerapi/auth/call/getRandomData.dart b/lib/outerapi/auth/call/getRandomData.dart
index 5db6b74..dd2c96a 100644
--- a/lib/outerapi/auth/call/getRandomData.dart
+++ b/lib/outerapi/auth/call/getRandomData.dart
@@ -2,7 +2,6 @@
 // GET http://localhost:3000/p/random
 
 import 'dart:convert';
-import 'dart:io';
 import 'package:http/http.dart' as http;
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 import '../model/my_random.dart';
diff --git a/lib/widgets/simples/random.dart b/lib/widgets/simples/random.dart
index 730ab9e..07e1eee 100644
--- a/lib/widgets/simples/random.dart
+++ b/lib/widgets/simples/random.dart
@@ -19,7 +19,7 @@ class RandomWidget extends StatelessWidget {
         return Center(
           child: switch (myRandom) {
             AsyncData(:final MyRandom value ) => Text(
-                'myRandom: ${value}'
+                'myRandom: $value'
             ),
             AsyncError() => const Text('Oops, something unexpected happened'),
             _ => const CircularProgressIndicator(),