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/.github/workflows/extensive.yml b/.github/workflows/extensive.yml
new file mode 100644
index 0000000..257f139
--- /dev/null
+++ b/.github/workflows/extensive.yml
@@ -0,0 +1,12 @@
+name: Extensive CI
+
+on:
+  push:
+    tags:
+      - '*'
+    paths:
+      - '.github/workflows/extensive.yml'
+
+jobs:
+  blackbox:
+    uses: innmind/github-workflows/.github/workflows/extensive.yml@main
diff --git a/CHANGELOG.md b/CHANGELOG.md
index dd66d4e..1d72238 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## [Unreleased]
+
+### Changed
+
+- Requires PHP `8.4`
+- Requires `innmind/filesystem:~9.0`
+- Requires `innmind/time:~1.0`
+
 ## 2.0.0 - 2025-04-16
 
 ### Changed
diff --git a/README.md b/README.md
index ff8e8a5..a2fb67d 100644
--- a/README.md
+++ b/README.md
@@ -19,17 +19,17 @@ composer require innmind/encoding
 
 ```php
 use Innmind\Filesystem\{
-    Adapter\Filesystem,
+    Adapter,
     Name,
 };
-use Innmind\TimeContinuum\Clock;
+use Innmind\Time\Clock;
 use Innmind\Url\Path;
 use Innmind\Encoding\{
     Gzip,
     Tar,
 };
 
-$adapter = Filesystem::mount(Path::of('some/directory/'));
+$adapter = Adapter::mount(Path::of('some/directory/'))->unwrap();
 $tar = $adapter
     ->get(Name::of('data'))
     ->map(Tar::encode(Clock::live()))
diff --git a/blackbox.php b/blackbox.php
index 3785ad1..78fd2a0 100644
--- a/blackbox.php
+++ b/blackbox.php
@@ -10,6 +10,10 @@
 };
 
 Application::new($argv)
+    ->when(
+        \getenv('BLACKBOX_SET_SIZE') !== false,
+        static fn(Application $app) => $app->scenariiPerProof((int) \getenv('BLACKBOX_SET_SIZE')),
+    )
     ->when(
         \getenv('ENABLE_COVERAGE') !== false,
         static fn(Application $app) => $app
diff --git a/composer.json b/composer.json
index 7f0e3da..5423ef1 100644
--- a/composer.json
+++ b/composer.json
@@ -15,10 +15,10 @@
         "issues": "http://github.com/innmind/encoding/issues"
     },
     "require": {
-        "php": "~8.2",
-        "innmind/immutable": "~5.7",
-        "innmind/filesystem": "~8.0",
-        "innmind/time-continuum": "~4.1"
+        "php": "~8.4",
+        "innmind/immutable": "~6.0",
+        "innmind/filesystem": "~9.0",
+        "innmind/time": "~1.0"
     },
     "autoload": {
         "psr-4": {
@@ -26,8 +26,8 @@
         }
     },
     "require-dev": {
-        "innmind/static-analysis": "^1.2.1",
-        "innmind/black-box": "~6.1",
+        "innmind/static-analysis": "~1.3",
+        "innmind/black-box": "~6.9",
         "innmind/coding-standard": "~2.0"
     }
 }
diff --git a/documentation/use-cases/backup.md b/documentation/use-cases/backup.md
index a5c9363..0cc37cc 100644
--- a/documentation/use-cases/backup.md
+++ b/documentation/use-cases/backup.md
@@ -25,9 +25,13 @@ $os = Factory::build();
 $data = $os
     ->filesystem()
     ->mount(Path::of('path/to/stored/data'))
+    ->unwrap()
     ->root()
     ->rename(Name::of('data'));
-$sql = $os->remote()->sql(Url::of('mysql://{user}:{password}@localhost:3306/{database}'));
+$sql = $os
+    ->remote()
+    ->sql(Url::of('mysql://{user}:{password}@localhost:3306/{database}'))
+    ->unwrap();
 $users = $sql(SQL::onDemand('SELECT * FROM users'))
     ->map(static fn($row) => \implode(
         "\t",
@@ -53,7 +57,7 @@ Up to this point `$archive` represents a file content but no real operation has
 
 ```php
 use Innmind\Http\{
-    ResponseSender,
+    Response\Sender\Native as ResponseSender,
     Response,
     Response\StatusCode,
     ProtocolVersion,
@@ -63,7 +67,7 @@ use Innmind\Http\{
 
 $archive = /* see above */;
 
-(new ResponseSender($os->clock()))(Response::of(
+ResponseSender::of($os->clock())(Response::of(
     StatusCode::ok,
     ProtocolVersion::v11,
     Headers::of(
diff --git a/documentation/use-cases/compressed-at-rest.md b/documentation/use-cases/compressed-at-rest.md
index 7437d7f..422af24 100644
--- a/documentation/use-cases/compressed-at-rest.md
+++ b/documentation/use-cases/compressed-at-rest.md
@@ -15,7 +15,7 @@ use Innmind\Url\Path;
 use Innmind\Http\{
     Response,
     Response\StatusCode,
-    ResponseSender,
+    Response\Sender\Native as ResponseSender,
 };
 
 $os = Factory::build();
@@ -25,14 +25,16 @@ $response = $serverRequest
     ->files()
     ->under('tsv')
     ->get('users')
-    ->map(static fn($file) => $file->content()
+    ->map(static fn($file) => $file->content())
     ->map(Gzip::compress())
     ->map(static fn($content) => File::named('users.tsv.gz', $content))
     ->map(
         static fn($file) => $os
             ->filesystem()
             ->mount(Path::of('path/to/stored/data/'))
-            ->add($file)),
+            ->unwrap()
+            ->add($file)
+            ->unwrap(),
     )
     ->match(
         static fn() => Response::of(
@@ -45,7 +47,7 @@ $response = $serverRequest
         ),
     );
 
-(new ResponseSender($os->clock()))($response);
+ResponseSender::of($os->clock())($response);
 ```
 
 This code will take any file uploaded in the key `tsv[users]`, gzip it and write it in the `path/to/stored/data/` directory under the name `users.tsv.gz` and return a `201` HTTP response. If the upload failed it will return a `400` response.
@@ -61,7 +63,7 @@ use Innmind\Url\Path;
 use Innmind\Http\{
     Response,
     Response\StatusCode,
-    ResponseSender,
+    Response\Sender\Native as ResponseSender,
     Headers,
     Header\ContentType,
     Header\ContentEncoding,
@@ -84,6 +86,7 @@ $acceptGzip = $serverRequest
 $response = $os
     ->filesystem()
     ->mount(Path::of('path/to/stored/data/'))
+    ->unwrap()
     ->get(Name::of('users.tsv.gz'))
     ->map(static fn($file) => match ($acceptGzip) {
         true => Response::of(
@@ -112,7 +115,7 @@ $response = $os
         ),
     );
 
-(new ResponseSender($os->clock()))($response);
+ResponseSender::of($os->clock())($response);
 ```
 
 Here we try to load the `users.tsv.gz` file, we check if the caller accepts a gzipped content, if so we return the file as is via a `200` HTTP response and if not we decompress the file and return it. And if the file doesn't exist we return a `400` response.
diff --git a/documentation/use-cases/http.md b/documentation/use-cases/http.md
index 20822a5..5bd3733 100644
--- a/documentation/use-cases/http.md
+++ b/documentation/use-cases/http.md
@@ -21,6 +21,7 @@ $http = $os->remote()->http();
 $os
     ->filesystem()
     ->mount(Path::of('path/to/stored/data/'))
+    ->unwrap()
     ->get(Name::of('somefile.txt'))
     ->map(static fn($file) => $file->content());
     ->map(Gzip::compress())
diff --git a/proofs/gzip.php b/proofs/gzip.php
index c4b9531..fe0317d 100644
--- a/proofs/gzip.php
+++ b/proofs/gzip.php
@@ -46,14 +46,14 @@ static function($assert, $file) {
                 ->number(
                     $content
                         ->chunks()
-                        ->fold(new Concat)
+                        ->fold(Concat::monoid)
                         ->toEncoding(Encoding::ascii)
                         ->length(),
                 )
                 ->greaterThan(
                     $compressed
                         ->chunks()
-                        ->fold(new Concat)
+                        ->fold(Concat::monoid)
                         ->toEncoding(Encoding::ascii)
                         ->length(),
                 );
@@ -98,8 +98,8 @@ static function($assert, $file) {
             $content = $decompress($compress($original));
 
             $assert->same(
-                $original->chunks()->fold(new Concat)->toString(),
-                $content->chunks()->fold(new Concat)->toString(),
+                $original->chunks()->fold(Concat::monoid)->toString(),
+                $content->chunks()->fold(Concat::monoid)->toString(),
             );
         },
     );
diff --git a/proofs/tar.php b/proofs/tar.php
index 00ecf9c..213291d 100644
--- a/proofs/tar.php
+++ b/proofs/tar.php
@@ -3,12 +3,13 @@
 
 use Innmind\Encoding\Tar;
 use Innmind\Filesystem\{
-    Adapter\Filesystem,
+    Adapter,
     Name,
     File,
     Directory,
+    Recover,
 };
-use Innmind\TimeContinuum\Clock;
+use Innmind\Time\Clock;
 use Innmind\Url\Path;
 use Innmind\Immutable\{
     Str,
@@ -27,8 +28,12 @@
         static function($assert, $name) {
             $clock = Clock::live();
             $path = \rtrim(\sys_get_temp_dir(), '/').'/innmind/encoding/';
-            $tmp = Filesystem::mount(Path::of($path));
-            $adapter = Filesystem::mount(Path::of('fixtures/'));
+            $tmp = Adapter::mount(Path::of($path))
+                ->recover(Recover::mount(...))
+                ->unwrap();
+            $adapter = Adapter::mount(Path::of('fixtures/'))
+                ->recover(Recover::mount(...))
+                ->unwrap();
             $tar = $adapter
                 ->get(Name::of($name))
                 ->map(static fn($file) => $file->rename(Name::of('other-'.$name)))
@@ -39,7 +44,7 @@ static function($assert, $name) {
                 );
             $tar = File::named('test.tar', $tar);
 
-            $tmp->add($tar);
+            $_ = $tmp->add($tar)->unwrap();
 
             $exitCode = null;
             \exec("tar -xf $path/test.tar --directory=$path", result_code: $exitCode);
@@ -67,8 +72,12 @@ static function($assert, $name) {
         static function($assert) {
             $clock = Clock::live();
             $path = \rtrim(\sys_get_temp_dir(), '/').'/innmind/encoding/';
-            $tmp = Filesystem::mount(Path::of($path));
-            $adapter = Filesystem::mount(Path::of('./'));
+            $tmp = Adapter::mount(Path::of($path))
+                ->recover(Recover::mount(...))
+                ->unwrap();
+            $adapter = Adapter::mount(Path::of('./'))
+                ->recover(Recover::mount(...))
+                ->unwrap();
             $tar = $adapter
                 ->get(Name::of('fixtures'))
                 ->map(Tar::encode($clock))
@@ -79,7 +88,7 @@ static function($assert) {
 
             $tar = File::named('fixtures.tar', $tar);
 
-            $tmp->add($tar);
+            $_ = $tmp->add($tar)->unwrap();
 
             $exitCode = null;
             \exec("tar -xf $path/fixtures.tar --directory=$path", result_code: $exitCode);
@@ -142,8 +151,12 @@ static function($assert, $name1, $name2) {
 
             $clock = Clock::live();
             $path = \rtrim(\sys_get_temp_dir(), '/').'/innmind/encoding/';
-            $tmp = Filesystem::mount(Path::of($path));
-            $adapter = Filesystem::mount(Path::of('./'));
+            $tmp = Adapter::mount(Path::of($path))
+                ->recover(Recover::mount(...))
+                ->unwrap();
+            $adapter = Adapter::mount(Path::of('./'))
+                ->recover(Recover::mount(...))
+                ->unwrap();
             $tar = $adapter
                 ->get(Name::of('fixtures'))
                 ->map(Directory::of($name2)->add(...))
@@ -156,7 +169,7 @@ static function($assert, $name1, $name2) {
 
             $tar = File::named('names.tar', $tar);
 
-            $tmp->add($tar);
+            $_ = $tmp->add($tar)->unwrap();
 
             $exitCode = null;
             \exec("tar -xf $path/names.tar --directory=$path", result_code: $exitCode);
@@ -221,14 +234,16 @@ static function($assert, $name1, $name2) {
         static function($assert, $file) {
             $clock = Clock::live();
             $path = \rtrim(\sys_get_temp_dir(), '/').'/innmind/encoding/';
-            $tmp = Filesystem::mount(Path::of($path));
+            $tmp = Adapter::mount(Path::of($path))
+                ->recover(Recover::mount(...))
+                ->unwrap();
 
             // make sure to avoid conflicts when trying to unarchive
-            $tmp->remove($file->name());
+            $_ = $tmp->remove($file->name())->unwrap();
 
             $tar = Tar::encode($clock)($file);
             $tar = File::named('shape.tar', $tar);
-            $tmp->add($tar);
+            $_ = $tmp->add($tar)->unwrap();
 
             $exitCode = null;
             \exec("tar -xf '$path/shape.tar' --directory=$path", result_code: $exitCode);
@@ -251,7 +266,7 @@ static function($assert, $file) {
 
             $assert->true($tmp->contains($file->name()));
             // for simplicity no recursive assertions on nested directories
-            $file
+            $_ = $file
                 ->all()
                 ->keep(Instance::of(File::class))
                 ->foreach(
diff --git a/src/Tar.php b/src/Tar.php
index 5b2a775..d4a7b26 100644
--- a/src/Tar.php
+++ b/src/Tar.php
@@ -3,7 +3,7 @@
 
 namespace Innmind\Encoding;
 
-use Innmind\TimeContinuum\Clock;
+use Innmind\Time\Clock;
 
 final class Tar
 {
diff --git a/src/Tar/Encode.php b/src/Tar/Encode.php
index 81fc496..97a7fa4 100644
--- a/src/Tar/Encode.php
+++ b/src/Tar/Encode.php
@@ -8,7 +8,7 @@
     File\Content,
     Directory,
 };
-use Innmind\TimeContinuum\{
+use Innmind\Time\{
     Clock,
     Format,
 };