diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 27d0161..e6f8775 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "3.1.3"
+  ".": "4.0.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2c9c702..6e5c875 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,25 @@
+## [4.0.0](https://github.com/Bdaya-Dev/flutter-shared-value/compare/v3.1.3...v4.0.0) (2026-05-30)
+
+### ⚠ BREAKING CHANGES
+
+* Minimum Dart SDK raised to >=3.8.0 (Dart 3 required).
+* Minimum Flutter SDK raised to >=3.32.0.
+* Upgraded rxdart to >=0.28.0 <2.0.0 (unblocks package:oidc rxdart 0.28 upgrade).
+* Upgraded shared_preferences to ^2.5.0.
+
+### Features
+
+* Comprehensive test suite (24 tests) covering SharedValue API, streams, persistence, custom encode/decode, widgets, and InheritedModel.
+* CI pipeline via GitHub Actions (stable + beta Flutter channels).
+* Automated pub.dev publishing via trusted publishing (OIDC) with release-please.
+* Static analysis with flutter_lints.
+* Semantic PR title enforcement.
+* Dependabot for pub + GitHub Actions dependency updates.
+
+### Miscellaneous
+
+* Apply dart format tall style for Dart 3.8+ compatibility ([b15c30b](https://github.com/Bdaya-Dev/flutter-shared-value/commit/b15c30b1ac8b4126dfa88f2b2b6a5152ff09c5ed))
+
 ## [3.1.3] - 03/11/2022
 
 * `customEncode` and `customDecode` can now handle null strings, indicating that the key does not exist in the storage
diff --git a/pubspec.yaml b/pubspec.yaml
index 63b9293..eca5b44 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: bdaya_shared_value
 description: A straightforward way to manage global state in flutter apps.
-version: 3.1.3
+version: 4.0.0
 homepage: https://github.com/Bdaya-Dev/flutter-shared-value
 repository: https://github.com/Bdaya-Dev/flutter-shared-value