diff --git a/vicephp/Virtue-JWT/src/JWK/Store/OpenIdKeyStore.php b/vicephp/Virtue-JWT/src/JWK/Store/OpenIdKeyStore.php
index 7172618..a6facc8 100644
--- a/vicephp/Virtue-JWT/src/JWK/Store/OpenIdKeyStore.php
+++ b/vicephp/Virtue-JWT/src/JWK/Store/OpenIdKeyStore.php
@@ -2,7 +2,7 @@
 
 namespace Virtue\JWK\Store;
 
-use GuzzleHttp\Client;
+use GuzzleHttp\ClientInterface;
 use Virtue\JWK\KeySet;
 use Virtue\JWK\KeyStore;
 use Virtue\JWT\Token;
@@ -10,12 +10,12 @@
 
 class OpenIdKeyStore implements KeyStore
 {
-    /** @var Client */
+    /** @var ClientInterface */
     private $client;
     /** @var bool */
     private $strict = false;
 
-    public function __construct(Client $client)
+    public function __construct(ClientInterface $client)
     {
         $this->client = $client;
     }
@@ -24,7 +24,7 @@ public function getFor(Token $token): KeySet
     {
         $issuer = $token->payload('iss');
         Assert::string($issuer, 'Issuer must be a string');
-        $response = $this->client->get(rtrim($issuer, '/') . '/.well-known/openid-configuration');
+        $response = $this->client->request('GET', rtrim($issuer, '/') . '/.well-known/openid-configuration');
         $config = json_decode((string) $response->getBody(), true, 512, JSON_THROW_ON_ERROR);
         Assert::isArray($config, 'Invalid OpenID configuration');
         if ($this->strict) {
@@ -37,7 +37,7 @@ public function getFor(Token $token): KeySet
         }
         Assert::string($config['jwks_uri']);
 
-        $response = $this->client->get($config['jwks_uri']);
+        $response = $this->client->request('GET', $config['jwks_uri']);
         $keySet = json_decode((string) $response->getBody(), true, 512, JSON_THROW_ON_ERROR);
         if (!is_array($keySet)) {
             $keySet = [];
diff --git a/vicephp/Virtue-JWT/tests/JWK/Store/OpenIdKeyStoreTest.php b/vicephp/Virtue-JWT/tests/JWK/Store/OpenIdKeyStoreTest.php
index 7ba29dd..5aa0e25 100644
--- a/vicephp/Virtue-JWT/tests/JWK/Store/OpenIdKeyStoreTest.php
+++ b/vicephp/Virtue-JWT/tests/JWK/Store/OpenIdKeyStoreTest.php
@@ -2,7 +2,7 @@
 
 namespace Virtue\JWK\Store;
 
-use GuzzleHttp\Client;
+use GuzzleHttp\ClientInterface;
 use GuzzleHttp\Psr7\Response;
 use Mockery as M;
 use Virtue\Api\TestCase;
@@ -22,9 +22,9 @@ public function testRemoveTrailingSlashFromIssuer(): void
             [],
             Psr7\Utils::streamFor(json_encode(['jwks_uri' => 'https://issuer.ggs-ps.com/keys']))
         );
-        $client = M::mock(Client::class);
-        $client->shouldReceive('get')
-            ->with('https://issuer.ggs-ps.com/.well-known/openid-configuration')
+        $client = M::mock(ClientInterface::class);
+        $client->shouldReceive('request')
+            ->with('GET', 'https://issuer.ggs-ps.com/.well-known/openid-configuration')
             ->andReturn($response)
             ->once();
 
@@ -33,7 +33,7 @@ public function testRemoveTrailingSlashFromIssuer(): void
             [],
             Psr7\Utils::streamFor(json_encode(['keys' => [[]]]))
         );
-        $client->shouldReceive('get')->andReturn($response)->once();
+        $client->shouldReceive('request')->andReturn($response)->once();
 
         $store = new OpenIdKeyStore($client);
         $store->getFor($token);
@@ -48,9 +48,9 @@ public function testGetKeySet(): void
             [],
             Psr7\Utils::streamFor(json_encode(['jwks_uri' => 'https://issuer.ggs-ps.com/keys']))
         );
-        $client = M::mock(Client::class);
-        $client->shouldReceive('get')
-            ->with('https://issuer.ggs-ps.com/.well-known/openid-configuration')
+        $client = M::mock(ClientInterface::class);
+        $client->shouldReceive('request')
+            ->with('GET', 'https://issuer.ggs-ps.com/.well-known/openid-configuration')
             ->andReturn($response)
             ->once();
 
@@ -60,8 +60,8 @@ public function testGetKeySet(): void
             [],
             Psr7\Utils::streamFor(json_encode(['keys' => [$key]]))
         );
-        $client->shouldReceive('get')
-            ->with('https://issuer.ggs-ps.com/keys')
+        $client->shouldReceive('request')
+            ->with('GET', 'https://issuer.ggs-ps.com/keys')
             ->andReturn($response)
             ->once();
 
@@ -82,9 +82,9 @@ public function testInvalidJwksUri(): void
             [],
             Psr7\Utils::streamFor(json_encode(['jwks_uri' => 'not a URI']))
         );
-        $client = M::mock(Client::class);
-        $client->shouldReceive('get')
-            ->with('https://issuer.ggs-ps.com/.well-known/openid-configuration')
+        $client = M::mock(ClientInterface::class);
+        $client->shouldReceive('request')
+            ->with('GET', 'https://issuer.ggs-ps.com/.well-known/openid-configuration')
             ->andReturn($response)
             ->once();
 
@@ -107,9 +107,9 @@ public function testIssuerMismatch(): void
                 'jwks_uri' => 'http://localhost',
             ]))
         );
-        $client = M::mock(Client::class);
-        $client->shouldReceive('get')
-            ->with('https://issuer.ggs-ps.com/.well-known/openid-configuration')
+        $client = M::mock(ClientInterface::class);
+        $client->shouldReceive('request')
+            ->with('GET', 'https://issuer.ggs-ps.com/.well-known/openid-configuration')
             ->andReturn($response)
             ->once();
 
@@ -129,9 +129,9 @@ public function testEmptyKeys(): void
             [],
             Psr7\Utils::streamFor(json_encode(['jwks_uri' => 'https://issuer.ggs-ps.com/keys']))
         );
-        $client = M::mock(Client::class);
-        $client->shouldReceive('get')
-            ->with('https://issuer.ggs-ps.com/.well-known/openid-configuration')
+        $client = M::mock(ClientInterface::class);
+        $client->shouldReceive('request')
+            ->with('GET', 'https://issuer.ggs-ps.com/.well-known/openid-configuration')
             ->andReturn($response)
             ->once();
 
@@ -140,8 +140,8 @@ public function testEmptyKeys(): void
             [],
             Psr7\Utils::streamFor(json_encode(''))
         );
-        $client->shouldReceive('get')
-            ->with('https://issuer.ggs-ps.com/keys')
+        $client->shouldReceive('request')
+            ->with('GET', 'https://issuer.ggs-ps.com/keys')
             ->andReturn($response)
             ->once();