diff --git a/.github/workflows/php-tests.yml b/.github/workflows/php-tests.yml
index a0cd416..e2ca537 100644
--- a/.github/workflows/php-tests.yml
+++ b/.github/workflows/php-tests.yml
@@ -63,7 +63,7 @@ jobs:
       - name: Install dependencies
         if: needs.changes.outputs.php == 'true'
         run: |
-          composer switch l:${{ matrix.laravel }} -- -- --no-interaction --no-progress --ansi
+          composer switch:l${{ matrix.laravel }} -- -- --no-interaction --no-progress --ansi
           composer dump-autoload --optimize
 
       - name: Execute tests with coverage
diff --git a/composer.json b/composer.json
index 91b9455..cab82d3 100644
--- a/composer.json
+++ b/composer.json
@@ -27,7 +27,7 @@
         "spatie/laravel-package-tools": "^1.16"
     },
     "require-dev": {
-        "brianium/paratest": "^7.0||^7.8",
+        "brianium/paratest": "^7.0 || ^8.0",
         "larastan/larastan": "^2.9||^3.0",
         "laravel/pint": "^1.14",
         "nunomaduro/collision": "^8.1||^7.10",
@@ -35,7 +35,7 @@
         "phpstan/extension-installer": "^1.3||^2.0",
         "phpstan/phpstan-deprecation-rules": "^1.1||^2.0",
         "phpunit/phpunit": "^10.1||^11.5.3",
-        "rector/rector": "^2.2",
+        "rector/rector": "^1.2 || ^2.2",
         "spatie/laravel-data": "^4.18"
     },
     "autoload": {
diff --git a/src/Modules/Relay/Responses/DumpAndDieResponse.php b/src/Modules/Relay/Responses/DumpAndDieResponse.php
index b1817bf..1e6fd5e 100644
--- a/src/Modules/Relay/Responses/DumpAndDieResponse.php
+++ b/src/Modules/Relay/Responses/DumpAndDieResponse.php
@@ -10,22 +10,30 @@ class DumpAndDieResponse extends Response
 {
     public const DUMP_AND_DIE_STATUS_CODE = 999;
 
+    public function __construct($response)
+    {
+        parent::__construct($response);
+
+        $this->preDecodeBody((string) $this->response->getBody());
+    }
+
     public function getStatusCode(): int
     {
         return self::DUMP_AND_DIE_STATUS_CODE;
     }
 
-    /**
-     * @return array<string, string|array<array-key, mixed>>
-     */
-    public function json($key = null, $default = null): array
+    private function preDecodeBody(string $body): void
     {
+        // Normally, we would overwrite the `->json` method. But there was a breaking change to the method in L12.48.
+        // If we overwrite the new `->json` and conform its new signature, we lose support for earlier versions.
+        // Instead, we need to pre-decode the body so that when calling ->json() it will use the below array.
+
         [
             'source' => $source,
             'dumps' => $dumps,
-        ] = resolve(VarDumpParser::class)->parse($this->response->getBody())->toArray();
+        ] = resolve(VarDumpParser::class)->parse($body)->toArray();
 
-        return [
+        $this->decoded = [
             'id' => Str::uuid()->toString(),
             'timestamp' => now()->format('Y-m-d H:i:s'),
             'source' => $source,