diff --git a/.gitignore b/.gitignore
index a247422..511c678 100644
--- a/.gitignore
+++ b/.gitignore
@@ -73,3 +73,6 @@ build/
 !**/ios/**/default.mode2v3
 !**/ios/**/default.pbxuser
 !**/ios/**/default.perspectivev3
+
+# FVM Version Cache
+.fvm/
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1485ada..640237d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Changed
+
+- Update linting rules.
+- Update dependencies — [175](https://github.com/dartoos-dev/json_cache/issues/175).
+
 ### Fixed
 
 - minor error in README file —
diff --git a/README.md b/README.md
index d4b91a6..b0c625d 100644
--- a/README.md
+++ b/README.md
@@ -294,6 +294,7 @@ import 'package:localstorage/localstorage.dart';
   await initLocalStorage();
   final JsonCache jsonCache = JsonCacheMem(JsonCacheLocalStorage(localStorage));
   …
+```
 
 ### JsonCacheSafeLocalStorage
 
diff --git a/analysis_options.yaml b/analysis_options.yaml
index 39a6f3b..02d1e9a 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml
@@ -14,4 +14,3 @@ linter:
     cancel_subscriptions: true
     # Good packages document everything
     public_member_api_docs: true
-    package_api_docs: true
diff --git a/lib/json_cache.dart b/lib/json_cache.dart
index c71640f..28e77dc 100644
--- a/lib/json_cache.dart
+++ b/lib/json_cache.dart
@@ -1,5 +1,5 @@
 /// A collection of [JsonCache] decorators.
-library json_cache;
+library;
 
 export 'src/json_cache.dart';
 export 'src/json_cache_exception.dart';
diff --git a/lib/src/json_cache_safe_local_storage.dart b/lib/src/json_cache_safe_local_storage.dart
index 777b43f..c081be6 100644
--- a/lib/src/json_cache_safe_local_storage.dart
+++ b/lib/src/json_cache_safe_local_storage.dart
@@ -1,6 +1,7 @@
 // ignore_for_file: avoid_dynamic_calls
 
 import 'dart:collection';
+import 'dart:io';
 
 import 'package:json_cache/json_cache.dart';
 import 'package:safe_local_storage/safe_local_storage.dart';
@@ -57,3 +58,12 @@ final class JsonCacheSafeLocalStorage implements JsonCache {
     return await _localStorage.read() as Map<dynamic, dynamic>;
   }
 }
+
+/// Adds resource release methods.
+extension DisposeSafeLocalStorage on SafeLocalStorage {
+  /// Deletes the file with the stored data.
+  Future<void> delete() async {
+    await write({});
+    await File(path).delete(recursive: true);
+  }
+}
diff --git a/pubspec.lock b/pubspec.lock
index 9f95999..06bc15b 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -45,26 +45,26 @@ packages:
     dependency: transitive
     description:
       name: characters
-      sha256: "04a925763edad70e8443c99234dc3328f442e811f1d8fd1a72f1c8ad0f69a605"
+      sha256: f71061c654a3380576a52b451dd5532377954cf9dbd272a78fc8479606670803
       url: "https://pub.dev"
     source: hosted
-    version: "1.3.0"
+    version: "1.4.0"
   clock:
     dependency: transitive
     description:
       name: clock
-      sha256: cb6d7f03e1de671e34607e909a7213e31d7752be4fb66a86d29fe1eb14bfb5cf
+      sha256: fddb70d9b5277016c77a80201021d40a2247104d9f4aa7bab7157b7e3f05b84b
       url: "https://pub.dev"
     source: hosted
-    version: "1.1.1"
+    version: "1.1.2"
   collection:
     dependency: transitive
     description:
       name: collection
-      sha256: ee67cb0715911d28db6bf4af1026078bd6f0128b07a5f66fb2ed94ec6783c09a
+      sha256: "2f5709ae4d3d59dd8f7cd309b4e023046b57d8a6c82130785d2b0e5868084e76"
       url: "https://pub.dev"
     source: hosted
-    version: "1.18.0"
+    version: "1.19.1"
   convert:
     dependency: transitive
     description:
@@ -93,10 +93,10 @@ packages:
     dependency: transitive
     description:
       name: fake_async
-      sha256: "511392330127add0b769b75a987850d136345d9227c6b94c96a04cf4a391bf78"
+      sha256: "5368f224a74523e8d2e7399ea1638b37aecfca824a3cc4dfdf77bf1fa905ac44"
       url: "https://pub.dev"
     source: hosted
-    version: "1.3.1"
+    version: "1.3.3"
   ffi:
     dependency: transitive
     description:
@@ -122,26 +122,26 @@ packages:
     dependency: "direct main"
     description:
       name: flutter_secure_storage
-      sha256: "165164745e6afb5c0e3e3fcc72a012fb9e58496fb26ffb92cf22e16a821e85d0"
+      sha256: "9cad52d75ebc511adfae3d447d5d13da15a55a92c9410e50f67335b6d21d16ea"
       url: "https://pub.dev"
     source: hosted
-    version: "9.2.2"
+    version: "9.2.4"
   flutter_secure_storage_linux:
     dependency: transitive
     description:
       name: flutter_secure_storage_linux
-      sha256: "4d91bfc23047422cbcd73ac684bc169859ee766482517c22172c86596bf1464b"
+      sha256: be76c1d24a97d0b98f8b54bce6b481a380a6590df992d0098f868ad54dc8f688
       url: "https://pub.dev"
     source: hosted
-    version: "1.2.1"
+    version: "1.2.3"
   flutter_secure_storage_macos:
     dependency: transitive
     description:
       name: flutter_secure_storage_macos
-      sha256: "1693ab11121a5f925bbea0be725abfcfbbcf36c1e29e571f84a0c0f436147a81"
+      sha256: "6c0a2795a2d1de26ae202a0d78527d163f4acbb11cde4c75c670f3a0fc064247"
       url: "https://pub.dev"
     source: hosted
-    version: "3.1.2"
+    version: "3.1.3"
   flutter_secure_storage_platform_interface:
     dependency: transitive
     description:
@@ -244,42 +244,42 @@ packages:
     dependency: transitive
     description:
       name: leak_tracker
-      sha256: "3f87a60e8c63aecc975dda1ceedbc8f24de75f09e4856ea27daf8958f2f0ce05"
+      sha256: "33e2e26bdd85a0112ec15400c8cbffea70d0f9c3407491f672a2fad47915e2de"
       url: "https://pub.dev"
     source: hosted
-    version: "10.0.5"
+    version: "11.0.2"
   leak_tracker_flutter_testing:
     dependency: transitive
     description:
       name: leak_tracker_flutter_testing
-      sha256: "932549fb305594d82d7183ecd9fa93463e9914e1b67cacc34bc40906594a1806"
+      sha256: "1dbc140bb5a23c75ea9c4811222756104fbcd1a27173f0c34ca01e16bea473c1"
       url: "https://pub.dev"
     source: hosted
-    version: "3.0.5"
+    version: "3.0.10"
   leak_tracker_testing:
     dependency: transitive
     description:
       name: leak_tracker_testing
-      sha256: "6ba465d5d76e67ddf503e1161d1f4a6bc42306f9d66ca1e8f079a47290fb06d3"
+      sha256: "8d5a2d49f4a66b49744b23b018848400d23e54caf9463f4eb20df3eb8acb2eb1"
       url: "https://pub.dev"
     source: hosted
-    version: "3.0.1"
+    version: "3.0.2"
   lint:
     dependency: "direct dev"
     description:
       name: lint
-      sha256: d758a5211fce7fd3f5e316f804daefecdc34c7e53559716125e6da7388ae8565
+      sha256: "3cd03646de313481336500ba02eb34d07c590535525f154aae7fda7362aa07a9"
       url: "https://pub.dev"
     source: hosted
-    version: "2.3.0"
+    version: "2.8.0"
   localstorage:
     dependency: "direct main"
     description:
       name: localstorage
-      sha256: "6340acefdd3a969cceb044a69cde2dc5877c5b861b2e02d0803930ed483dbe91"
+      sha256: e037e1db61f846e007206ef27f37d1d0cf53f9e25db5de983034803dd3356734
       url: "https://pub.dev"
     source: hosted
-    version: "5.0.0"
+    version: "6.0.0"
   logging:
     dependency: transitive
     description:
@@ -292,10 +292,10 @@ packages:
     dependency: transitive
     description:
       name: matcher
-      sha256: d2323aa2060500f906aa31a895b4030b6da3ebdcc5619d14ce1aada65cd161cb
+      sha256: dc58c723c3c24bf8d3e2d3ad3f2f9d7bd9cf43ec6feaa64181775e60190153f2
       url: "https://pub.dev"
     source: hosted
-    version: "0.12.16+1"
+    version: "0.12.17"
   material_color_utilities:
     dependency: transitive
     description:
@@ -308,10 +308,10 @@ packages:
     dependency: transitive
     description:
       name: meta
-      sha256: bdb68674043280c3428e9ec998512fb681678676b3c54e773629ffe74419f8c7
+      sha256: e3641ec5d63ebf0d9b41bd43201a66e3fc79a65db5f61fc181f04cd27aab950c
       url: "https://pub.dev"
     source: hosted
-    version: "1.15.0"
+    version: "1.16.0"
   mime:
     dependency: transitive
     description:
@@ -324,10 +324,10 @@ packages:
     dependency: "direct dev"
     description:
       name: mocktail
-      sha256: c4b5007d91ca4f67256e720cb1b6d704e79a510183a12fa551021f652577dce6
+      sha256: "890df3f9688106f25755f26b1c60589a92b3ab91a22b8b224947ad041bf172d8"
       url: "https://pub.dev"
     source: hosted
-    version: "1.0.3"
+    version: "1.0.4"
   mutex:
     dependency: "direct main"
     description:
@@ -356,26 +356,26 @@ packages:
     dependency: transitive
     description:
       name: path
-      sha256: "087ce49c3f0dc39180befefc60fdb4acd8f8620e5682fe2476afd0b3688bb4af"
+      sha256: "75cca69d1490965be98c73ceaea117e8a04dd21217b37b292c9ddbec0d955bc5"
       url: "https://pub.dev"
     source: hosted
-    version: "1.9.0"
+    version: "1.9.1"
   path_provider:
     dependency: transitive
     description:
       name: path_provider
-      sha256: fec0d61223fba3154d87759e3cc27fe2c8dc498f6386c6d6fc80d1afdd1bf378
+      sha256: "50c5dd5b6e1aaf6fb3a78b33f6aa3afca52bf903a8a5298f53101fdaee55bbcd"
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.4"
+    version: "2.1.5"
   path_provider_android:
     dependency: transitive
     description:
       name: path_provider_android
-      sha256: "477184d672607c0a3bf68fbbf601805f92ef79c82b64b4d6eb318cbca4c48668"
+      sha256: e122c5ea805bb6773bb12ce667611265980940145be920cd09a4b0ec0285cb16
       url: "https://pub.dev"
     source: hosted
-    version: "2.2.2"
+    version: "2.2.20"
   path_provider_foundation:
     dependency: transitive
     description:
@@ -444,26 +444,26 @@ packages:
     dependency: "direct main"
     description:
       name: safe_local_storage
-      sha256: ede4eb6cb7d88a116b3d3bf1df70790b9e2038bc37cb19112e381217c74d9440
+      sha256: e9a21b6fec7a8aa62cc2585ff4c1b127df42f3185adbd2aca66b47abe2e80236
       url: "https://pub.dev"
     source: hosted
-    version: "1.0.2"
+    version: "2.0.1"
   shared_preferences:
     dependency: "direct main"
     description:
       name: shared_preferences
-      sha256: "746e5369a43170c25816cc472ee016d3a66bc13fcf430c0bc41ad7b4b2922051"
+      sha256: "6e8bf70b7fef813df4e9a36f658ac46d107db4b4cfe1048b477d4e453a8159f5"
       url: "https://pub.dev"
     source: hosted
-    version: "2.3.2"
+    version: "2.5.3"
   shared_preferences_android:
     dependency: transitive
     description:
       name: shared_preferences_android
-      sha256: a7e8467e9181cef109f601e3f65765685786c1a738a83d7fbbde377589c0d974
+      sha256: "34266009473bf71d748912da4bf62d439185226c03e01e2d9687bc65bbfcb713"
       url: "https://pub.dev"
     source: hosted
-    version: "2.3.1"
+    version: "2.4.15"
   shared_preferences_foundation:
     dependency: transitive
     description:
@@ -540,7 +540,7 @@ packages:
     dependency: transitive
     description: flutter
     source: sdk
-    version: "0.0.99"
+    version: "0.0.0"
   source_map_stack_trace:
     dependency: transitive
     description:
@@ -569,18 +569,18 @@ packages:
     dependency: transitive
     description:
       name: stack_trace
-      sha256: "73713990125a6d93122541237550ee3352a2d84baad52d375a4cad2eb9b7ce0b"
+      sha256: "8b27215b45d22309b5cddda1aa2b19bdfec9df0e765f2de506401c071d38d1b1"
       url: "https://pub.dev"
     source: hosted
-    version: "1.11.1"
+    version: "1.12.1"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
-      sha256: ba2aa5d8cc609d96bbb2899c28934f9e1af5cddbd60a827822ea467161eb54e7
+      sha256: "969e04c80b8bcdf826f8f16579c7b14d780458bd97f56d107d3950fdbeef059d"
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.2"
+    version: "2.1.4"
   string_scanner:
     dependency: transitive
     description:
@@ -609,26 +609,26 @@ packages:
     dependency: "direct dev"
     description:
       name: test
-      sha256: "7ee44229615f8f642b68120165ae4c2a75fe77ae2065b1e55ae4711f6cf0899e"
+      sha256: "65e29d831719be0591f7b3b1a32a3cda258ec98c58c7b25f7b84241bc31215bb"
       url: "https://pub.dev"
     source: hosted
-    version: "1.25.7"
+    version: "1.26.2"
   test_api:
     dependency: transitive
     description:
       name: test_api
-      sha256: "5b8a98dafc4d5c4c9c72d8b31ab2b23fc13422348d2997120294d3bac86b4ddb"
+      sha256: "522f00f556e73044315fa4585ec3270f1808a4b186c936e612cab0b565ff1e00"
       url: "https://pub.dev"
     source: hosted
-    version: "0.7.2"
+    version: "0.7.6"
   test_core:
     dependency: transitive
     description:
       name: test_core
-      sha256: "55ea5a652e38a1dfb32943a7973f3681a60f872f8c3a05a14664ad54ef9c6696"
+      sha256: "80bf5a02b60af04b09e14f6fe68b921aad119493e26e490deaca5993fef1b05a"
       url: "https://pub.dev"
     source: hosted
-    version: "0.6.4"
+    version: "0.6.11"
   typed_data:
     dependency: transitive
     description:
@@ -641,10 +641,10 @@ packages:
     dependency: transitive
     description:
       name: vector_math
-      sha256: "80b3257d1492ce4d091729e3a67a60407d227c27241d6927be0130c98e741803"
+      sha256: d530bd74fea330e6e364cda7a85019c434070188383e1cd8d9777ee586914c5b
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.4"
+    version: "2.2.0"
   vm_service:
     dependency: transitive
     description:
@@ -665,10 +665,10 @@ packages:
     dependency: transitive
     description:
       name: web
-      sha256: d43c1d6b787bf0afad444700ae7f4db8827f701bc61c255ac8d328c6f4d52062
+      sha256: "868d88a33d8a87b18ffc05f9f030ba328ffefba92d6c127917a2ba740f9cfe4a"
       url: "https://pub.dev"
     source: hosted
-    version: "1.0.0"
+    version: "1.1.1"
   web_socket_channel:
     dependency: transitive
     description:
@@ -710,5 +710,5 @@ packages:
     source: hosted
     version: "3.1.2"
 sdks:
-  dart: ">=3.5.0 <4.0.0"
-  flutter: ">=3.22.0"
+  dart: ">=3.9.0 <4.0.0"
+  flutter: ">=3.35.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index 6a819ce..86a9c3a 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -11,17 +11,17 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  flutter_secure_storage: ^9.2.2
+  flutter_secure_storage: ^9.2.4
   hive: ^2.2.3
-  localstorage: ^5.0.0
+  localstorage: ^6.0.0
   mutex: ^3.1.0
-  safe_local_storage: ^1.0.2
-  shared_preferences: ^2.3.2
+  safe_local_storage: ^2.0.1
+  shared_preferences: ^2.5.3
 
 dev_dependencies:
   flutter_test:
     sdk: flutter
   hive_test: ^1.0.1
-  lint: ^2.3.0
-  mocktail: ^1.0.0
+  lint: ^2.8.0
+  mocktail: ^1.0.4
   test: ^1.24.9
diff --git a/test/json_cache_safe_local_storage_test.dart b/test/json_cache_safe_local_storage_test.dart
index d5b3123..8c3c208 100644
--- a/test/json_cache_safe_local_storage_test.dart
+++ b/test/json_cache_safe_local_storage_test.dart
@@ -14,7 +14,7 @@ void main() {
   late JsonCacheSafeLocalStorage jsonCacheSafeLocalStorage;
 
   // Profile data
-  const profKey = 'profile';
+  const profileKey = 'profile';
   const profData = {
     'name': 'John Doe',
     'age': 23,
@@ -22,14 +22,14 @@ void main() {
   };
 
   // App preferences data
-  const prefKey = 'preferences';
+  const preferencesKey = 'preferences';
   const prefData = {
     'theme': 'light',
     'notifications': {'enabled': true},
   };
 
   setUp(
-    () async {
+    () {
       tempDir = Directory.systemTemp;
       tempFile = File('${tempDir.path}/temp_file.json');
       storage = SafeLocalStorage(tempFile.path);
@@ -44,18 +44,18 @@ void main() {
         '"refresh", "value", "remove" with one piece of data',
         () async {
           // Insert a single piece of data into the cache
-          await jsonCacheSafeLocalStorage.refresh(profKey, profData);
+          await jsonCacheSafeLocalStorage.refresh(profileKey, profData);
 
           // Check if the data has been inserted into the cache.
           final profileRetrieved =
-              await jsonCacheSafeLocalStorage.value(profKey);
+              await jsonCacheSafeLocalStorage.value(profileKey);
           expect(profileRetrieved, equals(profData));
 
           // Remove the single piece of data stored.
-          await jsonCacheSafeLocalStorage.remove(profKey);
+          await jsonCacheSafeLocalStorage.remove(profileKey);
 
           // No data should remain in the cache.
-          final cachedValue = await jsonCacheSafeLocalStorage.value(profKey);
+          final cachedValue = await jsonCacheSafeLocalStorage.value(profileKey);
           expect(cachedValue, isNull);
         },
       );
@@ -64,27 +64,27 @@ void main() {
         '"refresh", "value", "remove" with multiple data',
         () async {
           // Insert multiple data into the cache
-          await jsonCacheSafeLocalStorage.refresh(profKey, profData);
-          await jsonCacheSafeLocalStorage.refresh(prefKey, prefData);
+          await jsonCacheSafeLocalStorage.refresh(profileKey, profData);
+          await jsonCacheSafeLocalStorage.refresh(preferencesKey, prefData);
 
           // Check if multiple data has been inserted into the cache.
           final profileRetrieved =
-              await jsonCacheSafeLocalStorage.value(profKey);
+              await jsonCacheSafeLocalStorage.value(profileKey);
           expect(profileRetrieved, equals(profData));
 
           final preferencesRetrived =
-              await jsonCacheSafeLocalStorage.value(prefKey);
+              await jsonCacheSafeLocalStorage.value(preferencesKey);
           expect(preferencesRetrived, prefData);
 
           // Remove data from the cache.
-          await jsonCacheSafeLocalStorage.remove(profKey);
-          await jsonCacheSafeLocalStorage.remove(prefKey);
+          await jsonCacheSafeLocalStorage.remove(profileKey);
+          await jsonCacheSafeLocalStorage.remove(preferencesKey);
 
           final removedProfValue =
-              await jsonCacheSafeLocalStorage.value(profKey);
+              await jsonCacheSafeLocalStorage.value(profileKey);
           expect(removedProfValue, isNull);
           final removedPrefValue =
-              await jsonCacheSafeLocalStorage.value(prefKey);
+              await jsonCacheSafeLocalStorage.value(preferencesKey);
           expect(removedPrefValue, isNull);
         },
       );
@@ -93,11 +93,12 @@ void main() {
         'contains',
         () async {
           // Insert a single piece of data into the cache.
-          await jsonCacheSafeLocalStorage.refresh(profKey, profData);
+          await jsonCacheSafeLocalStorage.refresh(profileKey, profData);
 
           // Check
-          expect(await jsonCacheSafeLocalStorage.contains(profKey), true);
-          expect(await jsonCacheSafeLocalStorage.contains(prefKey), false);
+          expect(await jsonCacheSafeLocalStorage.contains(profileKey), true);
+          expect(
+              await jsonCacheSafeLocalStorage.contains(preferencesKey), false);
 
           // Test for keys that doesn't exist
           expect(await jsonCacheSafeLocalStorage.contains('generickey'), false);
@@ -105,64 +106,71 @@ void main() {
           expect(await jsonCacheSafeLocalStorage.contains('PREFKEY'), false);
 
           // Insert a new piece of data into the cache to test more than one key stored.
-          await jsonCacheSafeLocalStorage.refresh(prefKey, prefData);
+          await jsonCacheSafeLocalStorage.refresh(preferencesKey, prefData);
 
           // Check for multiple data.
-          expect(await jsonCacheSafeLocalStorage.contains(profKey), true);
-          expect(await jsonCacheSafeLocalStorage.contains(prefKey), true);
+          expect(await jsonCacheSafeLocalStorage.contains(profileKey), true);
+          expect(
+              await jsonCacheSafeLocalStorage.contains(preferencesKey), true);
 
           // Remove data from the cache.
-          await jsonCacheSafeLocalStorage.remove(profKey);
-          expect(await jsonCacheSafeLocalStorage.contains(profKey), false);
-          expect(await jsonCacheSafeLocalStorage.contains(prefKey), true);
+          await jsonCacheSafeLocalStorage.remove(profileKey);
+          expect(await jsonCacheSafeLocalStorage.contains(profileKey), false);
+          expect(
+              await jsonCacheSafeLocalStorage.contains(preferencesKey), true);
 
           // Remove data from the cache.
-          await jsonCacheSafeLocalStorage.remove(prefKey);
-          expect(await jsonCacheSafeLocalStorage.contains(profKey), false);
-          expect(await jsonCacheSafeLocalStorage.contains(prefKey), false);
+          await jsonCacheSafeLocalStorage.remove(preferencesKey);
+          expect(await jsonCacheSafeLocalStorage.contains(profileKey), false);
+          expect(
+              await jsonCacheSafeLocalStorage.contains(preferencesKey), false);
         },
       );
 
       test('keys', () async {
         // update data
-        await jsonCacheSafeLocalStorage.refresh(profKey, profData);
-        await jsonCacheSafeLocalStorage.refresh(prefKey, prefData);
+        await jsonCacheSafeLocalStorage.refresh(profileKey, profData);
+        await jsonCacheSafeLocalStorage.refresh(preferencesKey, prefData);
 
-        expect(await jsonCacheSafeLocalStorage.keys(), [profKey, prefKey]);
+        expect(
+          await jsonCacheSafeLocalStorage.keys(),
+          [profileKey, preferencesKey],
+        );
       });
       group('method "keys"', () {
         setUp(() async {
           // update data
-          await jsonCacheSafeLocalStorage.refresh(profKey, profData);
-          await jsonCacheSafeLocalStorage.refresh(prefKey, prefData);
+          await jsonCacheSafeLocalStorage.refresh(profileKey, profData);
+          await jsonCacheSafeLocalStorage.refresh(preferencesKey, prefData);
         });
         test('should return the inserted keys', () async {
-          expect(await jsonCacheSafeLocalStorage.keys(), [profKey, prefKey]);
+          expect(await jsonCacheSafeLocalStorage.keys(),
+              [profileKey, preferencesKey]);
         });
         test('should keep the returned keys immutable', () async {
           final keys = await jsonCacheSafeLocalStorage.keys();
           // This should not change the 'keys' variable.
           await jsonCacheSafeLocalStorage
               .refresh('info', {'This is very important information.': true});
-          expect(keys, [profKey, prefKey]);
+          expect(keys, [profileKey, preferencesKey]);
         });
       });
       test(
         'clear',
         () async {
           // Insert multiple data into the cache.
-          await jsonCacheSafeLocalStorage.refresh(profKey, profData);
-          await jsonCacheSafeLocalStorage.refresh(prefKey, prefData);
+          await jsonCacheSafeLocalStorage.refresh(profileKey, profData);
+          await jsonCacheSafeLocalStorage.refresh(preferencesKey, prefData);
 
           // Clear it. All data should be deleted with the file.
           await jsonCacheSafeLocalStorage.clear();
 
           // No data should remain in the cache.
-          final cachedValue = await jsonCacheSafeLocalStorage.value(profKey);
+          final cachedValue = await jsonCacheSafeLocalStorage.value(profileKey);
           expect(cachedValue, isNull);
 
           // Insert a single piece of data into the cache. This refresh avoids errors on operational systems.
-          await jsonCacheSafeLocalStorage.refresh(profKey, profData);
+          await jsonCacheSafeLocalStorage.refresh(profileKey, profData);
         },
       );
     },
diff --git a/test/json_cache_try_test.dart b/test/json_cache_try_test.dart
index 61303fa..a4669ed 100644
--- a/test/json_cache_try_test.dart
+++ b/test/json_cache_try_test.dart
@@ -7,13 +7,13 @@ class JsonCacheMock extends Mock implements JsonCache {}
 void main() {
   group('JsonCacheTry:', () {
     final jsonCacheMock = JsonCacheMock();
-    test('should avoid JsonCacheTry as the wrapped instance', () async {
+    test('should avoid JsonCacheTry as the wrapped instance', () {
       expect(
         () => JsonCacheTry(JsonCacheTry(jsonCacheMock)),
         throwsAssertionError,
       );
     });
-    test('clear should throw "JsonCacheException"', () async {
+    test('clear should throw "JsonCacheException"', () {
       final JsonCacheTry jsonCacheTry = JsonCacheTry(jsonCacheMock);
       // Stub the 'clear' method.
       when(() => jsonCacheMock.clear()).thenThrow(Exception('Cache Failure'));
@@ -21,13 +21,13 @@ void main() {
       verifyNever(() => jsonCacheMock.clear());
       // Interact with the jsonCacheTry instance.
       expect(
-        () async => jsonCacheTry.clear(),
+        () => jsonCacheTry.clear(),
         throwsA(const TypeMatcher<JsonCacheException>()),
       );
       // Check if the interaction occurred only once.
       verify(() => jsonCacheMock.clear()).called(1);
     });
-    test('contains should throw "JsonCacheException"', () async {
+    test('contains should throw "JsonCacheException"', () {
       final JsonCacheTry jsonCacheTry = JsonCacheTry(jsonCacheMock);
       // Stub the 'contains' method.
       when(() => jsonCacheMock.contains('aKey'))
@@ -36,13 +36,13 @@ void main() {
       verifyNever(() => jsonCacheMock.contains('aKey'));
       // Interact with the jsonCacheTry instance.
       expect(
-        () async => jsonCacheTry.contains('aKey'),
+        () => jsonCacheTry.contains('aKey'),
         throwsA(const TypeMatcher<JsonCacheException>()),
       );
       // Check if the interaction occurred only once.
       verify(() => jsonCacheMock.contains('aKey')).called(1);
     });
-    test('keys should throw "JsonCacheException"', () async {
+    test('keys should throw "JsonCacheException"', () {
       final JsonCacheTry jsonCacheTry = JsonCacheTry(jsonCacheMock);
       // Stub the 'contains' method.
       when(() => jsonCacheMock.keys()).thenThrow(Exception('Cache Failure'));
@@ -50,13 +50,13 @@ void main() {
       verifyNever(() => jsonCacheMock.keys());
       // Interact with the jsonCacheTry instance.
       expect(
-        () async => jsonCacheTry.keys(),
+        () => jsonCacheTry.keys(),
         throwsA(const TypeMatcher<JsonCacheException>()),
       );
       // Check if the interaction occurred only once.
       verify(() => jsonCacheMock.keys()).called(1);
     });
-    test('refresh should throw "JsonCacheException"', () async {
+    test('refresh should throw "JsonCacheException"', () {
       final JsonCacheTry jsonCacheTry = JsonCacheTry(jsonCacheMock);
       // Stub the 'refresh' method.
       when(() => jsonCacheMock.refresh('aKey', {}))
@@ -65,13 +65,13 @@ void main() {
       verifyNever(() => jsonCacheMock.refresh('aKey', {}));
       // Interact with the jsonCacheTry instance.
       expect(
-        () async => jsonCacheTry.refresh('aKey', {}),
+        () => jsonCacheTry.refresh('aKey', {}),
         throwsA(const TypeMatcher<JsonCacheException>()),
       );
       // Check if the interaction occurred only once.
       verify(() => jsonCacheMock.refresh('aKey', {})).called(1);
     });
-    test('remove should throw "JsonCacheException"', () async {
+    test('remove should throw "JsonCacheException"', () {
       final JsonCacheTry jsonCacheTry = JsonCacheTry(jsonCacheMock);
       // Stub the 'remove' method.
       when(() => jsonCacheMock.remove('aKey'))
@@ -80,13 +80,13 @@ void main() {
       verifyNever(() => jsonCacheMock.remove('aKey'));
       // Interact with the jsonCacheTry instance.
       expect(
-        () async => jsonCacheTry.remove('aKey'),
+        () => jsonCacheTry.remove('aKey'),
         throwsA(const TypeMatcher<JsonCacheException>()),
       );
       // Check if the interaction occurred only once.
       verify(() => jsonCacheMock.remove('aKey')).called(1);
     });
-    test('value should throw "JsonCacheException"', () async {
+    test('value should throw "JsonCacheException"', () {
       final JsonCacheTry jsonCacheTry = JsonCacheTry(jsonCacheMock);
       // Stub the 'value' method.
       when(() => jsonCacheMock.value('aKey'))
@@ -95,7 +95,7 @@ void main() {
       verifyNever(() => jsonCacheMock.value('aKey'));
       // Interact with the jsonCacheTry instance.
       expect(
-        () async => jsonCacheTry.value('aKey'),
+        () => jsonCacheTry.value('aKey'),
         throwsA(const TypeMatcher<JsonCacheException>()),
       );
       // Check if the interaction occurred only once.