diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9ce6547..45d4ce1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,5 +7,3 @@ 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 f00bd88..425e8ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## [Unreleased]
+
+### Changed
+
+- Requires PHP `8.4`
+- Requires `innmind/operating-system:~7.0`
+- `Innmind\HttpServer\Main::preload()` environment variables are now expressed with a `Innmind\Immutable\Map<string, string>`
+
+### Fixed
+
+- Errors thrown during the handling of a request were displayed
+
 ## 5.0.0 - 2025-07-13
 
 ### Changed
diff --git a/composer.json b/composer.json
index 1dc9431..5cdf21b 100644
--- a/composer.json
+++ b/composer.json
@@ -15,9 +15,9 @@
         "issues": "http://github.com/Innmind/HttpServer/issues"
     },
     "require": {
-        "php": "~8.2",
-        "innmind/http": "~8.0",
-        "innmind/operating-system": "~6.0"
+        "php": "~8.4",
+        "innmind/http": "~9.0",
+        "innmind/operating-system": "~7.0"
     },
     "autoload": {
         "psr-4": {
@@ -31,7 +31,7 @@
         }
     },
     "require-dev": {
-        "innmind/static-analysis": "^1.2.1",
+        "innmind/static-analysis": "~1.3",
         "innmind/coding-standard": "~2.0"
     }
 }
diff --git a/src/Main.php b/src/Main.php
index c86ca0a..d2c2a34 100644
--- a/src/Main.php
+++ b/src/Main.php
@@ -7,7 +7,6 @@
     Factory\ServerRequestFactory,
     Response\Sender\Native,
     ServerRequest,
-    ServerRequest\Environment,
     Response,
     Response\StatusCode,
     ProtocolVersion,
@@ -19,6 +18,7 @@
     OperatingSystem,
     Config,
 };
+use Innmind\Immutable\Map;
 
 abstract class Main
 {
@@ -36,12 +36,18 @@ final public function __construct(?Config $config = null)
             return;
         }
 
-        $this->preload($os, $request->environment());
+        /** @var Map<string, string> */
+        $env = Map::of();
+
+        foreach (\getenv() as $key => $value) {
+            $env = ($env)($key, $value);
+        }
+
+        $this->preload($os, $env);
 
         try {
             $response = $this->main($request);
         } catch (\Throwable $e) {
-            throw $e;
             $response = $this->serverError($request);
         }
 
@@ -58,8 +64,10 @@ final public function __construct(?Config $config = null)
      * rendered to the client. This is the expected behaviour so it's easier to
      * watch errors when developping the app. This method should never throw an
      * exception when in production mode.
+     *
+     * @param Map<string, string> $env Environment variables
      */
-    protected function preload(OperatingSystem $os, Environment $env): void
+    protected function preload(OperatingSystem $os, Map $env): void
     {
     }