diff --git a/Tests/Security/Helpers/Auth0Psr16AdapterTest.php b/Tests/Security/Helpers/Auth0Psr16AdapterTest.php
deleted file mode 100644
index 0a0548f..0000000
--- a/Tests/Security/Helpers/Auth0Psr16AdapterTest.php
+++ /dev/null
@@ -1,121 +0,0 @@
-<?php
-
-namespace Auth0\JWTAuthBundle\Tests\Helpers;
-
-use PHPUnit\Framework\TestCase;
-use Mockery;
-use Psr\Cache\CacheItemInterface;
-use Psr\Cache\CacheItemPoolInterface;
-use Auth0\JWTAuthBundle\Security\Helpers\Auth0Psr16Adapter;
-
-class Auth0Psr16AdapterTest extends TestCase
-{
-    private $adapter;
-    private $mockPool;
-    private $mockItems;
-
-    protected function setUp(): void
-    {
-        parent::setUp();
-
-        $this->mockPool = Mockery::mock(CacheItemPoolInterface::class, 'CacheItemPoolInterface');
-        $this->mockItems = [
-            Mockery::mock(CacheItemInterface::class, 'CacheItemInterface'),
-            Mockery::mock(CacheItemInterface::class, 'CacheItemInterface'),
-        ];
-
-        $this->adapter = new Auth0Psr16Adapter($this->mockPool);
-    }
-
-    public function testConstructor()
-    {
-        $this->assertInstanceOf(Auth0Psr16Adapter::class, $this->adapter);
-    }
-
-    public function testFetch()
-    {
-        $this->mockItems[0]->shouldReceive('isHit')->times(1)->andReturn(true);
-        $this->mockItems[0]->shouldReceive('get')->times(1)->andReturn('some_value');
-        $this->mockPool->shouldReceive('getItem')->withArgs(['some_item'])->andReturn($this->mockItems[0]);
-        $this->assertEquals('some_value', $this->adapter->get('some_item'));
-    }
-
-    public function testFetchMiss()
-    {
-        $this->mockItems[0]->shouldReceive('isHit')->times(1)->andReturn(false);
-        $this->mockPool->shouldReceive('getItem')->withArgs(['no_item'])->andReturn($this->mockItems[0]);
-        $this->assertFalse($this->adapter->get('no_item', false));
-    }
-
-    public function testFetchInvalid()
-    {
-        $invalidKeyString = '{}()/\@';
-
-        $this->mockPool->shouldReceive('getItem')->withArgs([$invalidKeyString])->andReturn(false);
-        $this->assertFalse($this->adapter->get($invalidKeyString, false));
-    }
-
-    public function testFetchMultiple()
-    {
-        $expectedResponse = [
-            'first_item'  => 'first_value',
-            'second_item' => 'second_value'
-        ];
-
-        $this->mockItems[0]->shouldReceive('isHit')->once()->andReturn(true);
-        $this->mockItems[0]->shouldReceive('get')->once()->andReturn(array_values($expectedResponse)[0]);
-        $this->mockItems[1]->shouldReceive('isHit')->once()->andReturn(true);
-        $this->mockItems[1]->shouldReceive('get')->once()->andReturn(array_values($expectedResponse)[1]);
-
-        $this->mockPool->shouldReceive('getItems')->withArgs([array_keys($expectedResponse)])->andReturn([ $this->mockItems[0], $this->mockItems[1] ]);
-
-        $this->assertEquals(array_values($expectedResponse), $this->adapter->getMultiple(array_keys($expectedResponse)));
-    }
-
-    public function testContains()
-    {
-        $this->mockPool->shouldReceive('hasItem')->withArgs(['no_item'])->andReturn(false);
-        $this->mockPool->shouldReceive('hasItem')->withArgs(['some_item'])->andReturn(true);
-        $this->assertFalse($this->adapter->has('no_item'));
-        $this->assertTrue($this->adapter->has('some_item'));
-    }
-
-    public function testSave()
-    {
-        $this->mockItems[0]->shouldReceive('set')->twice()->with('dummy_data');
-        $this->mockItems[0]->shouldReceive('expiresAfter')->once()->with(null);
-        $this->mockItems[0]->shouldReceive('expiresAfter')->once()->with(2);
-        $this->mockPool->shouldReceive('getItem')->twice()->with('some_item')->andReturn($this->mockItems[0]);
-        $this->mockPool->shouldReceive('save')->twice()->with($this->mockItems[0])->andReturn(true);
-        $this->assertTrue($this->adapter->set('some_item', 'dummy_data'));
-        $this->assertTrue($this->adapter->set('some_item', 'dummy_data', 2));
-    }
-
-    public function testSaveInvalid()
-    {
-        $invalidKeyString = '{}()/\@';
-
-        $this->mockPool->shouldReceive('getItem')->once()->with($invalidKeyString);
-        $this->assertFalse($this->adapter->set($invalidKeyString, 'dummy_data'));
-    }
-
-    public function testDelete()
-    {
-        $this->mockPool->shouldReceive('deleteItem')->once()->with('some_item')->andReturn(true);
-        $this->assertTrue($this->adapter->delete('some_item'));
-    }
-
-    public function testDeleteInvalid()
-    {
-        $invalidKeyString = '{}()/\@';
-
-        $this->mockPool->shouldReceive('deleteItem')->once()->with($invalidKeyString)->andReturn(false);
-        $this->assertFalse($this->adapter->delete($invalidKeyString));
-    }
-
-    public function testClear()
-    {
-        $this->mockPool->shouldReceive('clear')->once()->andReturn(true);
-        $this->assertTrue($this->adapter->clear());
-    }
-}
diff --git a/src/Security/Helpers/Auth0Psr16Adapter.php b/src/Security/Helpers/Auth0Psr16Adapter.php
deleted file mode 100644
index a1dc284..0000000
--- a/src/Security/Helpers/Auth0Psr16Adapter.php
+++ /dev/null
@@ -1,209 +0,0 @@
-<?php declare(strict_types=1);
-
-namespace Auth0\JWTAuthBundle\Security\Helpers;
-
-use Psr\SimpleCache\CacheInterface;
-use Psr\Cache\CacheItemPoolInterface;
-
-/**
- * A PSR-16 interface for PSR-6 cache pools
- *
- * @package Auth0\JWTAuthBundle\Security
- */
-class Auth0Psr16Adapter implements CacheInterface
-{
-
-    /**
-     * Instance of a PSR-6 or PSR-16 compatible caching interface.
-     *
-     * @var CacheItemPoolInterface
-     */
-    protected $cache;
-
-    /**
-     * Auth0Psr16Adapter constructor.
-     *
-     * @param CacheItemPoolInterface $cache A PSR-6 or PSR-16 compatible cache interface.
-     */
-    public function __construct(CacheItemPoolInterface $cache)
-    {
-        $this->cache = $cache;
-    }
-
-    /**
-     * {@inheritdoc}
-     *
-     * @param string $key     The unique key of this item in the cache.
-     * @param mixed  $default Default value to return if the key does not exist.
-     *
-     * @return mixed The value of the item from the cache, or $default in case of cache miss.
-     */
-    public function get($key, $default = null)
-    {
-        $item = null;
-
-        try {
-            $item = $this->cache->getItem($key);
-        } catch (\Throwable $th) {
-            $item = null;
-        }
-
-        if ($item && $item->isHit()) {
-            return $item->get();
-        }
-
-        return $default;
-    }
-
-    /**
-     * {@inheritdoc}
-     *
-     * @param string                     $key   The key of the item to store.
-     * @param mixed                      $value The value of the item to store. Must be serializable.
-     * @param null|integer|\DateInterval $ttl   Optional. The TTL value of this item. If no value is sent and
-     *                                          the driver supports TTL then the library may set a default value
-     *                                          for it or let the driver take care of that.
-     *
-     * @return boolean True on success and false on failure.
-     */
-    public function set($key, $value, $ttl = null)
-    {
-        try {
-            $item = $this->cache->getItem($key);
-        } catch (\Throwable $th) {
-            $item = null;
-        }
-
-        if ($item) {
-            $item->expiresAfter($ttl);
-            $item->set($value);
-            return $this->cache->save($item);
-        }
-
-        return false;
-    }
-
-    /**
-     * {@inheritdoc}
-     *
-     * @param string $key The unique cache key of the item to delete.
-     *
-     * @return boolean True if the item was successfully removed. False if there was an error.
-     */
-    public function delete($key)
-    {
-        try {
-            return $this->cache->deleteItem($key);
-        } catch (\Exception $e) {
-            return false;
-        }
-    }
-
-    /**
-     * {@inheritdoc}
-     *
-     * @return boolean True on success and false on failure.
-     */
-    public function clear()
-    {
-        return $this->cache->clear();
-    }
-
-    /**
-     * {@inheritdoc}
-     *
-     * @param array<string> $keys    A list of keys that can obtained in a single operation.
-     * @param mixed         $default Default value to return for keys that do not exist.
-     *
-     * @return array<int|string,mixed> A list of key => value pairs. Missing cache keys will have $default as value.
-     */
-    // phpcs:ignore
-    public function getMultiple($keys, $default = null)
-    {
-        $items    = $this->cache->getItems($keys);
-        $response = [];
-
-        foreach ($items as $key => $item) {
-            /*
-             * @type $item CacheItemInterface
-             */
-
-            if (! $item->isHit()) {
-                $response[$key] = $default;
-            }
-
-            $response[$key] = $item->get();
-        }
-
-        return $response;
-    }
-
-    /**
-     * {@inheritdoc}
-     *
-     * @param array<string,mixed>        $values A list of key => value pairs for a multiple-set operation.
-     * @param null|integer|\DateInterval $ttl    Optional. The TTL value of this item. If no value is sent and
-     *                                           the driver supports TTL then the library may set a default value
-     *                                           for it or let the driver take care of that.
-     *
-     * @return boolean True on success and false on failure.
-     */
-    // phpcs:ignore
-    public function setMultiple($values, $ttl = null)
-    {
-        $keys        = [];
-        $arrayValues = [];
-
-        foreach ($values as $key => $value) {
-            $keys[]            = $key;
-            $arrayValues[$key] = $value;
-        }
-
-        try {
-            $items   = $this->cache->getItems($keys);
-            $success = true;
-
-            foreach ($items as $key => $item) {
-                $item->set($arrayValues[$key]);
-                $item->expiresAfter($ttl);
-
-                if ($success) {
-                    $success = $this->cache->saveDeferred($item);
-                }
-            }
-        } catch (\Throwable $th) {
-            $success = false;
-        }
-
-        if ($success) {
-            $success = $this->cache->commit();
-        }
-
-        return $success;
-    }
-
-    /**
-     * {@inheritdoc}
-     *
-     * @param array<string> $keys A list of string-based keys to be deleted.
-     *
-     * @return boolean True if the items were successfully removed. False if there was an error.
-     */
-    // phpcs:ignore
-    public function deleteMultiple($keys)
-    {
-        return $this->cache->deleteItems($keys);
-    }
-
-    /**
-     * {@inheritdoc}
-     *
-     * @param string $key The cache item key.
-     *
-     * @return boolean
-     */
-    public function has($key)
-    {
-        return $this->cache->hasItem($key);
-    }
-}