diff --git a/src/Config/Filters.php b/src/Config/Filters.php
index 54e92a8..b232d1c 100644
--- a/src/Config/Filters.php
+++ b/src/Config/Filters.php
@@ -5,8 +5,10 @@
 namespace APITester\Config;
 
 use APITester\Util\Filterable;
+use OC\BusinessRules\Entities\Security\OAuth2\InvalidScopeException;
 use Symfony\Component\Yaml\Tag\TaggedValue;
 use Symfony\Component\Yaml\Yaml;
+use UnhandledMatchError;
 
 final class Filters
 {
@@ -174,9 +176,11 @@ private function handleTags(string|int|TaggedValue $value): array
         $operator = '=';
 
         if ($value instanceof TaggedValue) {
-            if ($value->getTag() === 'NOT') {
-                $operator = '!=';
-            }
+            match ($value->getTag()) {
+                'NOT' => $operator = '!=',
+                'IN' => $operator = 'contains',
+                default => $operator,
+            };
             $value = (string) $value->getValue();
         }
 
diff --git a/src/Util/Traits/FilterableTrait.php b/src/Util/Traits/FilterableTrait.php
index 1334c99..812886b 100644
--- a/src/Util/Traits/FilterableTrait.php
+++ b/src/Util/Traits/FilterableTrait.php
@@ -10,10 +10,12 @@ public function has(string $prop, $value, string $operator = '='): bool
     {
         $self = collect([$this]);
 
-        $object = $self->whereNotNull($prop)
-            ->first();
-        if (is_array($object->{$prop}) && array_key_exists((string) $value, $object->{$prop})) {
-            return true;
+        if ($operator === 'contains') {
+            $object = $self->whereNotNull($prop)
+                ->first();
+            if (is_array($object->{$prop}) && array_key_exists((string) $value, $object->{$prop})) {
+                return true;
+            }
         }
 
         if (str_contains($prop, '*')) {
diff --git a/tests/Preparator/Error400MissingRequiredFieldsPreparatorTest.php b/tests/Preparator/Error400MissingRequiredFieldsPreparatorTest.php
index 2455f13..b78910c 100644
--- a/tests/Preparator/Error400MissingRequiredFieldsPreparatorTest.php
+++ b/tests/Preparator/Error400MissingRequiredFieldsPreparatorTest.php
@@ -15,6 +15,7 @@
 use APITester\Test\TestCase;
 use APITester\Util\Assert;
 use cebe\openapi\spec\Schema;
+use Symfony\Component\Yaml\Tag\TaggedValue;
 
 final class Error400MissingRequiredFieldsPreparatorTest extends \PHPUnit\Framework\TestCase
 {
@@ -206,9 +207,11 @@ public function getData(): iterable
             ],
             [
                 'filters' => [
-                    'exclude' => [[
-                        'extensions' => 'x-usecase',
-                    ]],
+                    'exclude' => [
+                        [
+                            'extensions' => new TaggedValue('IN', 'x-usecase'),
+                        ],
+                    ],
                 ],
             ],
         ];