diff --git a/pubspec.lock b/pubspec.lock
index 33d62ad..6ffd8d1 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -21,7 +21,7 @@ packages:
       name: async
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.8.2"
+    version: "2.8.1"
   bloc:
     dependency: transitive
     description:
@@ -42,7 +42,7 @@ packages:
       name: characters
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.2.0"
+    version: "1.1.0"
   charcode:
     dependency: transitive
     description:
@@ -197,14 +197,7 @@ packages:
       name: matcher
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.12.11"
-  material_color_utilities:
-    dependency: transitive
-    description:
-      name: material_color_utilities
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.1.3"
+    version: "0.12.10"
   meta:
     dependency: transitive
     description:
@@ -290,12 +283,12 @@ packages:
     source: hosted
     version: "4.2.0"
   platform:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: platform
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "3.1.0"
+    version: "3.0.0"
   plugin_platform_interface:
     dependency: transitive
     description:
@@ -447,7 +440,7 @@ packages:
       name: test_api
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.4.8"
+    version: "0.4.2"
   toggle_rotate:
     dependency: "direct main"
     description:
@@ -510,7 +503,7 @@ packages:
       name: vector_math
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.1.1"
+    version: "2.1.0"
   win32:
     dependency: transitive
     description:
@@ -533,5 +526,5 @@ packages:
     source: hosted
     version: "5.1.2"
 sdks:
-  dart: ">=2.14.0 <3.0.0"
+  dart: ">=2.13.0 <3.0.0"
   flutter: ">=2.0.0"