diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 189105d..2f3eecb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,5 +12,3 @@ 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/CHANGELOG.md b/CHANGELOG.md
index 0ccc378..11af71a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [Unreleased]
+
+### Changed
+
+- Requires PHP `8.4`
+- Requires `innmind/immutable:~6.0`
+
 ## 3.0.0 - 2025-08-23
 
 ### Changed
diff --git a/composer.json b/composer.json
index b6cefcd..946350f 100644
--- a/composer.json
+++ b/composer.json
@@ -15,8 +15,8 @@
         "issues": "http://github.com/innmind/di/issues"
     },
     "require": {
-        "php": "~8.2",
-        "innmind/immutable": "~5.18"
+        "php": "~8.4",
+        "innmind/immutable": "~6.0"
     },
     "autoload": {
         "psr-4": {
@@ -30,7 +30,7 @@
         }
     },
     "require-dev": {
-        "innmind/static-analysis": "^1.2.1",
+        "innmind/static-analysis": "~1.3",
         "innmind/black-box": "~6.5",
         "innmind/coding-standard": "~2.0"
     }