diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a311e64..c4e231c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macOS-latest]
-        php-version: ['8.2', '8.3', '8.4']
+        php-version: ['8.4', '8.5']
         dependency-versions: ['lowest', 'highest']
     name: 'PHPUnit'
     steps:
@@ -33,5 +33,3 @@ jobs:
     uses: innmind/github-workflows/.github/workflows/psalm-matrix.yml@main
   cs:
     uses: innmind/github-workflows/.github/workflows/cs.yml@main
-    with:
-      php-version: '8.2'
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..b25ad8a
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,11 @@
+name: Create release
+
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  release:
+    uses: innmind/github-workflows/.github/workflows/release.yml@main
+    secrets: inherit
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 32c5ce6..64864ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [Unreleased]
+
+### Changed
+
+- Requires PHP `8.4`
+- Requires `innmind/immutable:~6.0`
+
 ## 1.4.0 - 2024-03-23
 
 ### Added
diff --git a/composer.json b/composer.json
index d821dfa..4857c70 100644
--- a/composer.json
+++ b/composer.json
@@ -15,9 +15,9 @@
         "issues": "http://github.com/Innmind/Json/issues"
     },
     "require": {
-        "php": "~8.2",
+        "php": "~8.4",
         "ext-json": "*",
-        "innmind/immutable": "~5.3"
+        "innmind/immutable": "~6.0"
     },
     "autoload": {
         "psr-4": {
@@ -30,8 +30,8 @@
         }
     },
     "require-dev": {
-        "phpunit/phpunit": "~10.0",
-        "vimeo/psalm": "~5.23|dev-master",
+        "phpunit/phpunit": "~12.0",
+        "innmind/static-analysis": "~1.3",
         "innmind/coding-standard": "~2.0"
     }
 }