diff --git a/CHANGELOG.md b/CHANGELOG.md
index 117455d..93be733 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.20.1
+
+- Add `language/strict-casts` and remove `strong-mode` (Not behavior change)
+
 ## 1.20.0
 
 - Change minimum Dart version to '2.18.0'
diff --git a/example/pubspec.lock b/example/pubspec.lock
index 15e0b31..d21aa9a 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -54,7 +54,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "1.20.0"
+    version: "1.20.1"
   sky_engine:
     dependency: transitive
     description: flutter
diff --git a/lib/analysis_options.yaml b/lib/analysis_options.yaml
index cc4c3d6..fff78d9 100644
--- a/lib/analysis_options.yaml
+++ b/lib/analysis_options.yaml
@@ -1,12 +1,10 @@
 include: package:flutter_lints/flutter.yaml
 analyzer:
-  strong-mode:
-    implicit-casts: false
-    implicit-dynamic: false
   errors:
     missing_required_param: warning
     missing_return: warning
   language:
+    strict-casts: true
     strict-inference: true
     strict-raw-types: true
 linter:
diff --git a/pubspec.yaml b/pubspec.yaml
index 81b6a50..5e3f4be 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: pedantic_mono
 description: '[mono edition] Recommended lints for Flutter apps, packages, and plugins to encourage good coding practices.'
-version: 1.20.0
+version: 1.20.1
 repository: https://github.com/mono0926/pedantic_mono
 funding:
   - https://github.com/sponsors/mono0926