diff --git a/pubspec.lock b/pubspec.lock
index c455c6e..fd77804 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -21,7 +21,7 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.6.1"
+    version: "2.8.2"
   boolean_selector:
     dependency: transitive
     description:
@@ -35,14 +35,14 @@ packages:
       name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.1"
   clock:
     dependency: transitive
     description:
@@ -91,7 +91,7 @@ packages:
       name: encrypted_shared_preferences
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.0"
+    version: "3.0.0"
   fake_async:
     dependency: transitive
     description:
@@ -155,14 +155,14 @@ packages:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.10"
+    version: "0.12.11"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0"
+    version: "1.7.0"
   mutex:
     dependency: "direct main"
     description:
@@ -246,7 +246,21 @@ packages:
       name: shared_preferences
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.6"
+    version: "2.0.11"
+  shared_preferences_android:
+    dependency: transitive
+    description:
+      name: shared_preferences_android
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.9"
+  shared_preferences_ios:
+    dependency: transitive
+    description:
+      name: shared_preferences_ios
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.8"
   shared_preferences_linux:
     dependency: transitive
     description:
@@ -328,7 +342,7 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.0"
+    version: "0.4.3"
   typed_data:
     dependency: transitive
     description:
@@ -342,7 +356,7 @@ packages:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
   win32:
     dependency: transitive
     description:
@@ -358,5 +372,5 @@ packages:
     source: hosted
     version: "0.2.0"
 sdks:
-  dart: ">=2.13.0 <3.0.0"
-  flutter: ">=2.0.0"
+  dart: ">=2.14.0 <3.0.0"
+  flutter: ">=2.5.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index 2a7f4b0..4f1a752 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -10,12 +10,12 @@ environment:
 
 dependencies:
   cross_local_storage: ^2.0.1
-  encrypted_shared_preferences: ^2.0.0
+  encrypted_shared_preferences: ^3.0.0
   flutter:
     sdk: flutter
   localstorage: ^4.0.0+1
   mutex: ^3.0.0
-  shared_preferences: ^2.0.6
+  shared_preferences: ^2.0.11
 
 dev_dependencies:
   flutter_test:
diff --git a/test/json_cache_mem_test.dart b/test/json_cache_mem_test.dart
index d3598d9..7770661 100644
--- a/test/json_cache_mem_test.dart
+++ b/test/json_cache_mem_test.dart
@@ -1,5 +1,3 @@
-import 'dart:async';
-
 import 'package:flutter_test/flutter_test.dart';
 import 'package:json_cache/json_cache.dart';