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 9e3f0ff..9ad2bf1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [Unreleased]
+
+### Changed
+
+- Requires PHP `8.4`
+- Requires `innmind/immutable:~6.0`
+
 ## 4.2.0 - 2025-06-07
 
 ### Changed
diff --git a/composer.json b/composer.json
index 1d13663..d39fc2d 100644
--- a/composer.json
+++ b/composer.json
@@ -15,10 +15,10 @@
         "issues": "http://github.com/Innmind/StackTrace/issues"
     },
     "require": {
-        "php": "~8.2",
-        "innmind/immutable": "~5.16",
-        "innmind/url": "~4.4",
-        "innmind/graphviz": "~4.0"
+        "php": "~8.4",
+        "innmind/immutable": "~6.0",
+        "innmind/url": "~5.0",
+        "innmind/graphviz": "~5.0"
     },
     "autoload": {
         "psr-4": {
@@ -31,7 +31,7 @@
         }
     },
     "require-dev": {
-        "innmind/static-analysis": "~1.2.1",
+        "innmind/static-analysis": "~1.3",
         "innmind/black-box": "^6.4.1",
         "innmind/coding-standard": "~2.0"
     }
diff --git a/src/Render.php b/src/Render.php
index b9763c2..e28b35c 100644
--- a/src/Render.php
+++ b/src/Render.php
@@ -312,7 +312,7 @@ private function hashFrame(CallFrame $frame): string
             $prefix = "{$frame->file()->path()->toString()}|{$frame->line()->toString()}|";
         }
 
-        return "$prefix{$frame->toString()}|{$frame->arguments()->count()}";
+        return "$prefix{$frame->toString()}|{$frame->arguments()->size()}";
     }
 
     private function node(CallFrame|Throwable $reference): Node
diff --git a/tests/CallFramesTest.php b/tests/CallFramesTest.php
index dd59c79..b8c1b3d 100644
--- a/tests/CallFramesTest.php
+++ b/tests/CallFramesTest.php
@@ -22,7 +22,7 @@ public function testOf()
         }
 
         $this->assertInstanceOf(Sequence::class, $frames);
-        $this->assertCount(15, $frames);
+        $this->assertSame(15, $frames->size());
         $this->assertInstanceOf(CallFrame\MethodCall::class, $frames->get(0)->match(
             static fn($frame) => $frame,
             static fn() => null,
@@ -67,7 +67,9 @@ public static function staticCall()
         if (!\function_exists('\Tests\Innmind\StackTrace\foo')) {
             function foo(callable $x)
             {
-                (static function($x) {$x(); })($x);
+                (static function($x) {
+                    $x();
+                })($x);
             }
         }
 
diff --git a/tests/StackTraceTest.php b/tests/StackTraceTest.php
index 67979e3..4af4baf 100644
--- a/tests/StackTraceTest.php
+++ b/tests/StackTraceTest.php
@@ -31,7 +31,7 @@ public function testInterface()
 
         $this->assertEquals(Throwable::of($foo), $stack->throwable());
         $this->assertInstanceOf(Sequence::class, $stack->previous());
-        $this->assertCount(2, $stack->previous());
+        $this->assertSame(2, $stack->previous()->size());
         $this->assertEquals(
             [Throwable::of($bar), Throwable::of($baz)],
             $stack->previous()->toList(),
diff --git a/tests/ThrowableTest.php b/tests/ThrowableTest.php
index 9acde84..4e61d36 100644
--- a/tests/ThrowableTest.php
+++ b/tests/ThrowableTest.php
@@ -31,7 +31,7 @@ public function testInterface()
         $this->assertInstanceOf(Line::class, $throwable->line());
         $this->assertSame(22, $throwable->line()->toInt());
         $this->assertInstanceOf(Sequence::class, $throwable->trace());
-        $this->assertCount(9, $throwable->trace());
+        $this->assertSame(9, $throwable->trace()->size());
         $this->assertSame(
             $e->getTraceAsString(),
             Str::of("\n")->join($throwable->trace()->map(
@@ -39,6 +39,6 @@ public function testInterface()
             ))->toString(),
         );
         $this->assertInstanceOf(Sequence::class, $throwable->callFrames());
-        $this->assertCount(8, $throwable->callFrames());
+        $this->assertSame(8, $throwable->callFrames()->size());
     }
 }