diff --git a/.idea/libraries/Dart_Packages.xml b/.idea/libraries/Dart_Packages.xml
index ed38d53..29e9918 100644
--- a/.idea/libraries/Dart_Packages.xml
+++ b/.idea/libraries/Dart_Packages.xml
@@ -103,7 +103,7 @@
         <entry key="provider">
           <value>
             <list>
-              <option value="$PROJECT_DIR$/../.pub-cache/hosted/pub.flutter-io.cn/provider-6.0.3/lib" />
+              <option value="$PROJECT_DIR$/../.pub-cache/hosted/pub.flutter-io.cn/provider-5.0.0/lib" />
             </list>
           </value>
         </entry>
@@ -188,7 +188,7 @@
       <root url="file://$PROJECT_DIR$/../.pub-cache/hosted/pub.flutter-io.cn/meta-1.3.0/lib" />
       <root url="file://$PROJECT_DIR$/../.pub-cache/hosted/pub.flutter-io.cn/nested-1.0.0/lib" />
       <root url="file://$PROJECT_DIR$/../.pub-cache/hosted/pub.flutter-io.cn/path-1.8.0/lib" />
-      <root url="file://$PROJECT_DIR$/../.pub-cache/hosted/pub.flutter-io.cn/provider-6.0.3/lib" />
+      <root url="file://$PROJECT_DIR$/../.pub-cache/hosted/pub.flutter-io.cn/provider-5.0.0/lib" />
       <root url="file://$PROJECT_DIR$/../.pub-cache/hosted/pub.flutter-io.cn/source_span-1.8.1/lib" />
       <root url="file://$PROJECT_DIR$/../.pub-cache/hosted/pub.flutter-io.cn/stack_trace-1.10.0/lib" />
       <root url="file://$PROJECT_DIR$/../.pub-cache/hosted/pub.flutter-io.cn/stream_channel-2.1.0/lib" />
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index a9f4ef5..b4a3804 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -10,11 +10,9 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="18463f0e-cf10-4ee2-975b-376476396e12" name="Default Changelist" comment="Default Changelist">
-      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/lib/model/date_model.dart" beforeDir="false" afterPath="$PROJECT_DIR$/lib/model/date_model.dart" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/lib/utils/solar_term_util.dart" beforeDir="false" afterPath="$PROJECT_DIR$/lib/utils/solar_term_util.dart" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/lib/widget/month_view.dart" beforeDir="false" afterPath="$PROJECT_DIR$/lib/widget/month_view.dart" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/lib/widget/week_view.dart" beforeDir="false" afterPath="$PROJECT_DIR$/lib/widget/week_view.dart" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/example/pubspec.lock" beforeDir="false" afterPath="$PROJECT_DIR$/example/pubspec.lock" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/pubspec.lock" beforeDir="false" afterPath="$PROJECT_DIR$/pubspec.lock" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/pubspec.yaml" beforeDir="false" afterPath="$PROJECT_DIR$/pubspec.yaml" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
diff --git a/example/pubspec.lock b/example/pubspec.lock
index 7788bc4..2c251e2 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -108,7 +108,7 @@ packages:
       name: provider
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "6.0.3"
+    version: "5.0.0"
   sky_engine:
     dependency: transitive
     description: flutter
diff --git a/pubspec.lock b/pubspec.lock
index 51ff6d0..ac456ed 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -94,7 +94,7 @@ packages:
       name: provider
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "6.0.3"
+    version: "5.0.0"
   sky_engine:
     dependency: transitive
     description: flutter
diff --git a/pubspec.yaml b/pubspec.yaml
index 66ad14f..20c3bee 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -12,7 +12,7 @@ dependencies:
   flutter:
     sdk: flutter
 
-  provider: ^6.0.3
+  provider: ^5.0.0
 dev_dependencies:
   flutter_test:
     sdk: flutter