diff --git a/example/pubspec.lock b/example/pubspec.lock
index 6757786..969853e 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -33,4 +33,4 @@ packages:
     source: path
     version: "5.4.0"
 sdks:
-  dart: ">=3.1.0 <4.0.0"
+  dart: ">=3.4.0 <4.0.0"
diff --git a/example/pubspec.yaml b/example/pubspec.yaml
index 18de224..c284f1d 100644
--- a/example/pubspec.yaml
+++ b/example/pubspec.yaml
@@ -4,8 +4,8 @@ description: example of pedantic_sensuikan1973.
 version: 1.0.0
 publish_to: none
 environment:
-  sdk: '>=3.1.0 <4.0.0'
+  sdk: '>=3.4.0 <4.0.0'
 dependencies:
-  meta: ^1.11.0
+  meta: ^1.15.0
   pedantic_sensuikan1973:
     path: ..
diff --git a/pubspec.lock b/pubspec.lock
index 25eedd2..b4eb7bf 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -178,4 +178,4 @@ packages:
     source: hosted
     version: "3.1.2"
 sdks:
-  dart: ">=3.2.0 <4.0.0"
+  dart: ">=3.4.0 <4.0.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index 2effaff..e87b5fb 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -5,8 +5,8 @@ description: The best Dart analyzer settings are used. sensuikan1973 edition.
 homepage: https://github.com/sensuikan1973/pedantic_sensuikan1973
 
 environment:
-  sdk: '>=3.1.0 <4.0.0'
+  sdk: '>=3.4.0 <4.0.0'
 dependencies:
   flutter_lints: ^4.0.0
 dev_dependencies:
-  cider: ^0.2.4
+  cider: ^0.2.7