diff --git a/composer-require-checker.json b/composer-require-checker.json
index a484094c..a38d52a1 100644
--- a/composer-require-checker.json
+++ b/composer-require-checker.json
@@ -4,6 +4,7 @@
     "static", "self", "parent",
     "array", "string", "int", "float", "bool", "iterable", "callable", "void", "object",
     "Attribute", "ReflectionAttribute", "Stringable",
-    "BEAR\\Resource\\HalLink", "BEAR\\Resource\\NullReverseLink", "BEAR\\Resource\\ReverseLinkInterface", "BEAR\\Resource\\Module\\AnnotationModule"
+    "BEAR\\Resource\\HalLink", "BEAR\\Resource\\NullReverseLink", "BEAR\\Resource\\ReverseLinkInterface", "BEAR\\Resource\\Module\\AnnotationModule",
+    "JSONSchemaFaker\\Faker"
   ]
 }
diff --git a/composer.json b/composer.json
index 598c1c5e..bc6101d4 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,6 @@
         "justinrainbow/json-schema": "^5.3 || ^6.0",
         "koriym/attributes": "^1.0",
         "koriym/http-constants": "^1.1",
-        "koriym/json-schema-faker": "^0.3",
         "nocarrier/hal": "^0.9.12",
         "phpdocumentor/reflection-docblock": "^5.2",
         "psr/log": "^1.1 || ^2.0 || ^3.0",
@@ -37,7 +36,7 @@
         "ray/rector-ray": "^1.0",
         "rector/rector": "^1.2.4",
         "ray/compiler": "^1.9.1",
-        "bear/devtools": "^1.0"
+        "koriym/json-schema-faker": "^0.3.1"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/JsonSchema/JsonSchemaExceptionFakeHandler.php b/src/JsonSchema/JsonSchemaExceptionFakeHandler.php
index 74853332..ebd9e38c 100644
--- a/src/JsonSchema/JsonSchemaExceptionFakeHandler.php
+++ b/src/JsonSchema/JsonSchemaExceptionFakeHandler.php
@@ -6,9 +6,11 @@
 
 use BEAR\Resource\Exception\JsonSchemaException;
 use JSONSchemaFaker\Faker;
+use LogicException;
 use SplFileInfo;
 use stdClass;
 
+use function class_exists;
 use function is_object;
 
 class JsonSchemaExceptionFakeHandler implements JsonSchemaExceptionHandlerInterface
@@ -30,6 +32,10 @@ public function handle(ResourceObject $ro, JsonSchemaException $e, string $schem
     /** @return array<int|string, mixed> */
     private function fakeResponse(string $schemaFile): array
     {
+        if (! class_exists(Faker::class)) {
+            throw new LogicException('JSONSchemaFaker\Faker not installed. Please run "composer require koriym/json-schema-faker --dev". See more at https://github.com/bearsunday/BEAR.Resource/wiki/json_schema_faker_required'); // @codeCoverageIgnore
+        }
+
         /** @var array<int|string, mixed> $fakeObject */
         $fakeObject = (new Faker())->generate(new SplFileInfo($schemaFile));