diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 254cd22..da00fd9 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -11,7 +11,8 @@ jobs:
 
     strategy:
       matrix:
-        php: [8.1, 8.2, 8.3]
+        php: [8.1, 8.2, 8.3, 8.4]
+        composer-options: ["", "--prefer-lowest"]
 
     steps:
     - name: Checkout code
@@ -27,7 +28,7 @@ jobs:
       run: composer validate
 
     - name: Install dependencies
-      run: composer install --prefer-dist --no-progress --no-interaction --no-suggest
+      run: composer update --prefer-dist --no-progress --no-interaction --no-suggest ${{ matrix.composer-options }}
 
     - name: Run test suite
       run: php vendor/bin/codecept run
diff --git a/composer.json b/composer.json
index d02a361..6b09a18 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
         "ext-json": "*",
         "codeception/codeception": "^5.0.8",
         "codeception/lib-xml": "^1.0",
-        "justinrainbow/json-schema": "^5.2.9",
+        "justinrainbow/json-schema": "^5.2.9 || ^6",
         "softcreatr/jsonpath": "^0.8 || ^0.9"
     },
     "require-dev": {
diff --git a/tests/unit/Codeception/Module/RestTest.php b/tests/unit/Codeception/Module/RestTest.php
index d78cc8f..563d345 100644
--- a/tests/unit/Codeception/Module/RestTest.php
+++ b/tests/unit/Codeception/Module/RestTest.php
@@ -2,6 +2,7 @@
 
 declare(strict_types=1);
 
+use Composer\InstalledVersions;
 use Codeception\Configuration;
 use Codeception\Exception\ModuleException;
 use Codeception\Lib\Interfaces\API;
@@ -715,10 +716,16 @@ public function testRestExecute(string $configUrl, string $requestUrl, string $e
 
     public static function schemaAndResponse(): array
     {
+        if (version_compare(InstalledVersions::getVersion('justinrainbow/json-schema'), '6', '>=')) {
+            $errorInvalidBasicSchema = 'Must have a minimum value greater than or equal to 0';
+        } else {
+            $errorInvalidBasicSchema = 'Must have a minimum value of 0';
+        }
+
         return [
             //schema, responsefile, valid
             ['schemas/basic-schema.json', 'responses/valid-basic-schema.json', true, ""],
-            ['schemas/basic-schema.json', 'responses/invalid-basic-schema.json', false, "Must have a minimum value of 0"],
+            ['schemas/basic-schema.json', 'responses/invalid-basic-schema.json', false, $errorInvalidBasicSchema],
             ['schemas/complex-schema.json', 'responses/valid-complex-schema.json', true, ""],
             ['schemas/complex-schema.json', 'responses/invalid-complex-schema.json', false, "String value found, but a boolean is required"]
         ];