diff --git a/spec/Akeneo/Crowdin/Api/AddDirectorySpec.php b/spec/Akeneo/Crowdin/Api/AddDirectorySpec.php
index 30e4834..5e0b74a 100644
--- a/spec/Akeneo/Crowdin/Api/AddDirectorySpec.php
+++ b/spec/Akeneo/Crowdin/Api/AddDirectorySpec.php
@@ -41,8 +41,11 @@ public function it_adds_a_directory(HttpClientInterface $http, ResponseInterface
         $response->getContent()->willReturn($content);
         $http->request(
             'POST',
-            'project/sylius/add-directory?key=1234',
-            ['body' => ['name' => 'directory-to-create']]
+            'project/sylius/add-directory',
+            [
+                'headers' => ['Authorization' => 'Bearer 1234'],
+                'body' => ['name' => 'directory-to-create']
+            ]
         )->willReturn($response);
 
         $this->execute()->shouldBe($content);
diff --git a/spec/Akeneo/Crowdin/Api/AddFileSpec.php b/spec/Akeneo/Crowdin/Api/AddFileSpec.php
index 7c65bc2..c929d73 100644
--- a/spec/Akeneo/Crowdin/Api/AddFileSpec.php
+++ b/spec/Akeneo/Crowdin/Api/AddFileSpec.php
@@ -47,7 +47,11 @@ public function it_should_not_add_with_no_file(HttpClientInterface $http, Respon
         $content = '<xml></xml>';
         $response->getContent()->willReturn($content);
 
-        $http->request('POST', 'project/sylius/add-file?key=1234')->willReturn($response);
+        $http->request(
+            'POST',
+            'project/sylius/add-file',
+            ['headers' => ['Authorization' => 'Bearer 1234']]
+        )->willReturn($response);
         $this->shouldThrow('\InvalidArgumentException')->duringExecute();
     }
 
@@ -61,10 +65,11 @@ public function it_adds_a_file(FileReader $fileReader, HttpClientInterface $http
         $fileReader->readTranslation(Argument::any())->willReturn($fakeResource);
         $http->request(
             'POST',
-            'project/sylius/add-file?key=1234',
+            'project/sylius/add-file',
             [
                 'headers' => [
-                    'Content-Type' => 'multipart/form-data'
+                    'Content-Type' => 'multipart/form-data',
+                    'Authorization' => 'Bearer 1234'
                 ],
                 'body' => [
                     'files[path/to/crowdin.yml]' => $fakeResource,
diff --git a/spec/Akeneo/Crowdin/Api/ChangeDirectorySpec.php b/spec/Akeneo/Crowdin/Api/ChangeDirectorySpec.php
index ed4f2cc..da73874 100644
--- a/spec/Akeneo/Crowdin/Api/ChangeDirectorySpec.php
+++ b/spec/Akeneo/Crowdin/Api/ChangeDirectorySpec.php
@@ -33,8 +33,11 @@ public function it_should_set_name(
         ResponseInterface $response
     ) {
         $this->setName('myname');
-        $path = 'project/sylius/change-directory?key=1234';
-        $data = ['body' => ['name' => 'myname']];
+        $path = 'project/sylius/change-directory';
+        $data = [
+            'headers' => ['Authorization' => 'Bearer 1234'],
+            'body' => ['name' => 'myname']
+        ];
         $http->request('POST', $path, $data)->willReturn($response);
         $response->getContent(Argument::any())->willReturn('content');
 
@@ -50,8 +53,9 @@ public function it_should_set_data(
         $this->setExportPattern('myExportPattern');
         $this->setTitle('myTitle');
         $this->setNewName('myNewName');
-        $path = 'project/sylius/change-directory?key=1234';
+        $path = 'project/sylius/change-directory';
         $data = [
+            'headers' => ['Authorization' => 'Bearer 1234'],
             'body' => [
                 'name' => 'myName',
                 'branch' => 'myBranch',
diff --git a/spec/Akeneo/Crowdin/Api/DeleteDirectorySpec.php b/spec/Akeneo/Crowdin/Api/DeleteDirectorySpec.php
index 711d465..373550e 100644
--- a/spec/Akeneo/Crowdin/Api/DeleteDirectorySpec.php
+++ b/spec/Akeneo/Crowdin/Api/DeleteDirectorySpec.php
@@ -27,7 +27,7 @@ public function it_should_not_delete_with_no_directory(HttpClientInterface $http
         $content = '<xml></xml>';
         $response->getContent()->willReturn($content);
 
-        $http->request('POST', 'project/sylius/delete-directory?key=1234')->willReturn($response);
+        $http->request('POST', 'project/sylius/delete-directory', ['headers' => ['Authorization' => 'Bearer 1234']])->willReturn($response);
         $this->shouldThrow()->duringExecute();
     }
 
@@ -38,8 +38,11 @@ public function it_deletes_a_directory(HttpClientInterface $http, ResponseInterf
         $response->getContent()->willReturn($content);
         $http->request(
             'POST',
-            'project/sylius/delete-directory?key=1234',
-            ['body' => ['name' => 'directory-to-delete']]
+            'project/sylius/delete-directory',
+            [
+                'headers' => ['Authorization' => 'Bearer 1234'],
+                'body' => ['name' => 'directory-to-delete']
+            ]
         )->willReturn($response);
 
         $this->execute()->shouldBe($content);
diff --git a/spec/Akeneo/Crowdin/Api/DeleteFileSpec.php b/spec/Akeneo/Crowdin/Api/DeleteFileSpec.php
index 7290ce6..b0d7ebb 100644
--- a/spec/Akeneo/Crowdin/Api/DeleteFileSpec.php
+++ b/spec/Akeneo/Crowdin/Api/DeleteFileSpec.php
@@ -30,7 +30,7 @@ public function it_should_not_delete_with_no_file(HttpClientInterface $http, Res
         $content = '<xml></xml>';
         $response->getContent()->willReturn($content);
 
-        $http->request('POST', 'project/sylius/delete-file?key=1234')->willReturn($response);
+        $http->request('POST', 'project/sylius/delete-file', ['headers' => ['Authorization' => 'Bearer 1234']])->willReturn($response);
         $this->shouldThrow()->duringExecute();
     }
 
@@ -41,8 +41,11 @@ public function it_deletes_a_file(HttpClientInterface $http, ResponseInterface $
         $response->getContent()->willReturn($content);
         $http->request(
             'POST',
-            'project/sylius/delete-file?key=1234',
-            ['body' => ['file' => 'path/to/my/file']]
+            'project/sylius/delete-file',
+            [
+                'headers' => ['Authorization' => 'Bearer 1234'],
+                'body' => ['file' => 'path/to/my/file']
+            ]
         )->willReturn($response);
 
         $this->execute()->shouldBe($content);
diff --git a/spec/Akeneo/Crowdin/Api/DownloadSpec.php b/spec/Akeneo/Crowdin/Api/DownloadSpec.php
index f8a8af8..b39afb5 100644
--- a/spec/Akeneo/Crowdin/Api/DownloadSpec.php
+++ b/spec/Akeneo/Crowdin/Api/DownloadSpec.php
@@ -44,7 +44,7 @@ public function it_downloads_all_translations(HttpClientInterface $http, Respons
     {
         $this->setCopyDestination('/tmp');
         $this->setPackage('all.zip');
-        $http->request('GET', 'project/akeneo/download/all.zip?key=1234')
+        $http->request('GET', 'project/akeneo/download/all.zip', ['headers' => ['Authorization' => 'Bearer 1234']])
             ->willReturn($response);
         $response->getContent()->willReturn('translations content');
         $this->execute()->shouldBe('translations content');
@@ -54,7 +54,7 @@ public function it_downloads_french_translations(HttpClientInterface $http, Resp
     {
         $this->setCopyDestination('/tmp');
         $this->setPackage('fr.zip');
-        $http->request('GET', 'project/akeneo/download/fr.zip?key=1234')
+        $http->request('GET', 'project/akeneo/download/fr.zip', ['headers' => ['Authorization' => 'Bearer 1234']])
             ->willReturn($response);
         $response->getContent()->willReturn('translations content');
         $this->execute()->shouldBe('translations content');
diff --git a/spec/Akeneo/Crowdin/Api/ExportSpec.php b/spec/Akeneo/Crowdin/Api/ExportSpec.php
index 6b73c7e..ee060a1 100644
--- a/spec/Akeneo/Crowdin/Api/ExportSpec.php
+++ b/spec/Akeneo/Crowdin/Api/ExportSpec.php
@@ -26,7 +26,7 @@ public function it_builds_last_translations(HttpClientInterface $http, ResponseI
     {
         $content = '<?xml version="1.0" encoding="ISO-8859-1"?><success status="built"></success>';
         $response->getContent()->willReturn($content);
-        $http->request('GET', 'project/akeneo/export?key=1234')->willReturn($response);
+        $http->request('GET', 'project/akeneo/export', ['headers' => ['Authorization' => 'Bearer 1234']])->willReturn($response);
         $this->execute()->shouldBe($content);
     }
 
@@ -34,7 +34,7 @@ public function it_skips_build_if_less_than_half_an_hour(HttpClientInterface $ht
     {
         $content = '<?xml version="1.0" encoding="ISO-8859-1"?><success status="skipped"></success>';
         $response->getContent()->willReturn($content);
-        $http->request('GET', 'project/akeneo/export?key=1234')->willReturn($response);
+        $http->request('GET', 'project/akeneo/export', ['headers' => ['Authorization' => 'Bearer 1234']])->willReturn($response);
         $this->execute()->shouldBe($content);
     }
 }
diff --git a/spec/Akeneo/Crowdin/Api/InfoSpec.php b/spec/Akeneo/Crowdin/Api/InfoSpec.php
index eb17f82..3583b1b 100644
--- a/spec/Akeneo/Crowdin/Api/InfoSpec.php
+++ b/spec/Akeneo/Crowdin/Api/InfoSpec.php
@@ -15,7 +15,7 @@ public function let(Client $client, HttpClientInterface $http, ResponseInterface
         $client->getHttpClient()->willReturn($http);
         $client->getProjectIdentifier()->willReturn('akeneo');
         $client->getProjectApiKey()->willReturn('1234');
-        $http->request('GET', 'project/akeneo/info?key=1234')->willReturn($response);
+        $http->request('GET', 'project/akeneo/info', ['headers' => ['Authorization' => 'Bearer 1234']])->willReturn($response);
         $response->getContent()->willReturn('<xml></xml>');
         $this->beConstructedWith($client);
     }
diff --git a/spec/Akeneo/Crowdin/Api/LanguageStatusSpec.php b/spec/Akeneo/Crowdin/Api/LanguageStatusSpec.php
index 0531b7d..28ebdf5 100644
--- a/spec/Akeneo/Crowdin/Api/LanguageStatusSpec.php
+++ b/spec/Akeneo/Crowdin/Api/LanguageStatusSpec.php
@@ -29,8 +29,11 @@ public function it_gets_project_language_status(
         $this->setLanguage('fr')->shouldBe($this);
         $http->request(
             'POST',
-            'project/akeneo/language-status?key=1234',
-            ['body' => ['language' => 'fr']]
+            'project/akeneo/language-status',
+            [
+                'headers' => ['Authorization' => 'Bearer 1234'],
+                'body' => ['language' => 'fr']
+            ]
         )->willReturn($response);
         $response->getContent()->willReturn('<xml></xml>');
         $this->execute()->shouldBe('<xml></xml>');
diff --git a/spec/Akeneo/Crowdin/Api/StatusSpec.php b/spec/Akeneo/Crowdin/Api/StatusSpec.php
index 3238924..a330b79 100644
--- a/spec/Akeneo/Crowdin/Api/StatusSpec.php
+++ b/spec/Akeneo/Crowdin/Api/StatusSpec.php
@@ -14,7 +14,7 @@ public function let(Client $client, HttpClientInterface $http, ResponseInterface
         $client->getHttpClient()->willReturn($http);
         $client->getProjectIdentifier()->willReturn('akeneo');
         $client->getProjectApiKey()->willReturn('1234');
-        $http->request('GET', 'project/akeneo/status?key=1234')->willReturn($response);
+        $http->request('GET', 'project/akeneo/status', ['headers' => ['Authorization' => 'Bearer 1234']])->willReturn($response);
         $response->getContent()->willReturn('<xml></xml>');
         $this->beConstructedWith($client);
     }
diff --git a/spec/Akeneo/Crowdin/Api/SupportedLanguagesSpec.php b/spec/Akeneo/Crowdin/Api/SupportedLanguagesSpec.php
index 6ac7579..89891a8 100644
--- a/spec/Akeneo/Crowdin/Api/SupportedLanguagesSpec.php
+++ b/spec/Akeneo/Crowdin/Api/SupportedLanguagesSpec.php
@@ -16,7 +16,8 @@ class SupportedLanguagesSpec extends ObjectBehavior
     public function let(Client $client, HttpClientInterface $http, ResponseInterface $response)
     {
         $client->getHttpClient()->willReturn($http);
-        $http->request('GET', 'supported-languages')->willReturn($response);
+        $client->getProjectApiKey()->willReturn('1234');
+        $http->request('GET', 'supported-languages', ['headers' => ['Authorization' => 'Bearer 1234']])->willReturn($response);
         $response->getContent()->willReturn('<xml></xml>');
         $this->beConstructedWith($client);
     }
diff --git a/spec/Akeneo/Crowdin/Api/UpdateFileSpec.php b/spec/Akeneo/Crowdin/Api/UpdateFileSpec.php
index 49f624a..7ecde60 100644
--- a/spec/Akeneo/Crowdin/Api/UpdateFileSpec.php
+++ b/spec/Akeneo/Crowdin/Api/UpdateFileSpec.php
@@ -45,7 +45,11 @@ public function it_should_not_allow_update_with_no_file(HttpClientInterface $htt
     {
         $content = '<xml></xml>';
         $response->getContent(true)->willReturn($content);
-        $http->request('POST', 'project/akeneo/update-file?key=1234')->willReturn($response);
+        $http->request(
+            'POST',
+            'project/akeneo/update-file',
+            ['headers' => ['Authorization' => 'Bearer 1234']]
+        )->willReturn($response);
         $this->shouldThrow()->duringExecute();
     }
 
@@ -60,11 +64,13 @@ public function it_updates_some_translation_files(
         $response->getContent()->willReturn($content);
         $fakeResource = '[fake resource]';
         $fileReader->readTranslation(Argument::any())->willReturn($fakeResource);
+
         $http->request(
             'POST',
-            'project/akeneo/update-file?key=1234',
+            'project/akeneo/update-file',
             [
                 'headers' => [
+                    'Authorization' => 'Bearer 1234',
                     'Content-Type' => 'multipart/form-data'
                 ],
                 'body' => [
@@ -88,6 +94,7 @@ public function it_sends_additionnal_parameters(
             Argument::any(),
             [
                 'headers' => [
+                    'Authorization' => 'Bearer 1234',
                     'Content-Type' => 'multipart/form-data'
                 ],
                 'body' => [
diff --git a/spec/Akeneo/Crowdin/Api/UploadTranslationSpec.php b/spec/Akeneo/Crowdin/Api/UploadTranslationSpec.php
index db12571..a6a926f 100644
--- a/spec/Akeneo/Crowdin/Api/UploadTranslationSpec.php
+++ b/spec/Akeneo/Crowdin/Api/UploadTranslationSpec.php
@@ -63,7 +63,11 @@ public function it_should_not_allow_upload_with_no_translation(
         $this->setLocale('fr');
         $content = '<xml></xml>';
         $response->getContent()->willReturn($content);
-        $http->request('POST', 'project/sylius/upload-translation?key=1234')->willReturn($response);
+        $http->request(
+            'POST',
+            'project/sylius/upload-translation',
+            ['headers' => ['Authorization' => 'Bearer 1234']]
+        )->willReturn($response);
 
         $this->shouldThrow('\InvalidArgumentException')->duringExecute();
     }
@@ -73,7 +77,11 @@ public function it_should_not_allow_upload_with_no_locale(HttpClientInterface $h
         $this->addTranslation('spec/fixtures/messages.en.yml', 'crowdin/path/file.yml');
         $content = '<xml></xml>';
         $response->getContent()->willReturn($content);
-        $http->request('POST', 'project/sylius/upload-translation?key=1234')->willReturn($response);
+        $http->request(
+            'POST',
+            'project/sylius/upload-translation',
+            ['headers' => ['Authorization' => 'Bearer 1234']]
+        )->willReturn($response);
 
         $this->shouldThrow()->duringExecute();
     }
@@ -91,9 +99,10 @@ public function it_uploads_some_translations(
         $fileReader->readTranslation(Argument::any())->willReturn($fakeResource);
         $http->request(
             'POST',
-            'project/sylius/upload-translation?key=1234',
+            'project/sylius/upload-translation',
             [
                 'headers' => [
+                    'Authorization' => 'Bearer 1234',
                     'Content-Type' => 'multipart/form-data'
                 ],
                 'body' => [
diff --git a/src/Akeneo/Crowdin/Api/AddDirectory.php b/src/Akeneo/Crowdin/Api/AddDirectory.php
index 3992017..0dab05d 100644
--- a/src/Akeneo/Crowdin/Api/AddDirectory.php
+++ b/src/Akeneo/Crowdin/Api/AddDirectory.php
@@ -25,12 +25,9 @@ public function execute()
             throw new InvalidArgumentException('There is no directory to create.');
         }
 
-        $this->addUrlParameter('key', $this->client->getProjectApiKey());
-
         $path = sprintf(
-            "project/%s/add-directory?%s",
-            $this->client->getProjectIdentifier(),
-            $this->getUrlQueryString()
+            "project/%s/add-directory",
+            $this->client->getProjectIdentifier()
         );
 
         $parameters = ['name' => $this->directory];
@@ -41,7 +38,12 @@ public function execute()
             $parameters['branch'] = $this->branch;
         }
 
-        $data = ['body' => $parameters];
+        $data = [
+            'headers' => [
+                'Authorization' => 'Bearer ' . $this->client->getProjectApiKey()
+            ],
+            'body' => $parameters
+        ];
         $response = $this->client->getHttpClient()->request('POST', $path, $data);
 
         return $response->getContent();
diff --git a/src/Akeneo/Crowdin/Api/AddFile.php b/src/Akeneo/Crowdin/Api/AddFile.php
index 4b41b3a..80991f7 100644
--- a/src/Akeneo/Crowdin/Api/AddFile.php
+++ b/src/Akeneo/Crowdin/Api/AddFile.php
@@ -34,12 +34,9 @@ public function execute(): string
             throw new InvalidArgumentException('There is no files to add.');
         }
 
-        $this->addUrlParameter('key', $this->client->getProjectApiKey());
-
         $path = sprintf(
-            "project/%s/add-file?%s",
-            $this->client->getProjectIdentifier(),
-            $this->getUrlQueryString()
+            "project/%s/add-file",
+            $this->client->getProjectIdentifier()
         );
 
         $data = $this->parameters;
@@ -61,7 +58,8 @@ public function execute(): string
 
         $data = [
             'headers' => [
-                'Content-Type' => 'multipart/form-data'
+                'Content-Type' => 'multipart/form-data',
+                'Authorization' => 'Bearer 1234'
             ],
             'body' => $data
         ];
diff --git a/src/Akeneo/Crowdin/Api/ChangeDirectory.php b/src/Akeneo/Crowdin/Api/ChangeDirectory.php
index b7d3b11..348582a 100644
--- a/src/Akeneo/Crowdin/Api/ChangeDirectory.php
+++ b/src/Akeneo/Crowdin/Api/ChangeDirectory.php
@@ -28,12 +28,9 @@ public function execute(): string
             throw new InvalidArgumentException('Argument name is required.');
         }
 
-        $this->addUrlParameter('key', $this->client->getProjectApiKey());
-
         $path = sprintf(
-            "project/%s/change-directory?%s",
-            $this->client->getProjectIdentifier(),
-            $this->getUrlQueryString()
+            "project/%s/change-directory",
+            $this->client->getProjectIdentifier()
         );
 
         $data = ['name' => $this->name];
@@ -51,7 +48,10 @@ public function execute(): string
             $data['branch'] = $this->branch;
         }
 
-        $data = ['body' => $data];
+        $data = [
+            'headers' => ['Authorization' => 'Bearer ' . $this->client->getProjectApiKey()],
+            'body' => $data
+        ];
         $response = $this->client->getHttpClient()->request('POST', $path, $data);
 
         return $response->getContent();
diff --git a/src/Akeneo/Crowdin/Api/DeleteDirectory.php b/src/Akeneo/Crowdin/Api/DeleteDirectory.php
index 18b4a37..432add5 100644
--- a/src/Akeneo/Crowdin/Api/DeleteDirectory.php
+++ b/src/Akeneo/Crowdin/Api/DeleteDirectory.php
@@ -23,17 +23,17 @@ public function execute(): string
             throw new InvalidArgumentException('There is no directory to delete.');
         }
 
-        $this->addUrlParameter('key', $this->client->getProjectApiKey());
-
         $path = sprintf(
-            "project/%s/delete-directory?%s",
-            $this->client->getProjectIdentifier(),
-            $this->getUrlQueryString()
+            "project/%s/delete-directory",
+            $this->client->getProjectIdentifier()
         );
 
         $parameters = ['name' => $this->directory];
 
-        $data = ['body' => $parameters];
+        $data = [
+            'headers' => ['Authorization' => 'Bearer ' . $this->client->getProjectApiKey()],
+            'body' => $parameters
+        ];
         $response = $this->client->getHttpClient()->request('POST', $path, $data);
 
         return $response->getContent();
diff --git a/src/Akeneo/Crowdin/Api/DeleteFile.php b/src/Akeneo/Crowdin/Api/DeleteFile.php
index faf4376..c04edbc 100644
--- a/src/Akeneo/Crowdin/Api/DeleteFile.php
+++ b/src/Akeneo/Crowdin/Api/DeleteFile.php
@@ -23,17 +23,17 @@ public function execute(): string
             throw new InvalidArgumentException('There is no file to delete.');
         }
 
-        $this->addUrlParameter('key', $this->client->getProjectApiKey());
-
         $path = sprintf(
-            "project/%s/delete-file?%s",
-            $this->client->getProjectIdentifier(),
-            $this->getUrlQueryString()
+            "project/%s/delete-file",
+            $this->client->getProjectIdentifier()
         );
 
         $parameters = ['file' => $this->file];
 
-        $data = ['body' => $parameters];
+        $data = [
+            'headers' => ['Authorization' => 'Bearer ' . $this->client->getProjectApiKey()],
+            'body' => $parameters
+        ];
         $response = $this->client->getHttpClient()->request('POST', $path, $data);
 
         return $response->getContent();
diff --git a/src/Akeneo/Crowdin/Api/Download.php b/src/Akeneo/Crowdin/Api/Download.php
index b83fd59..df31e77 100644
--- a/src/Akeneo/Crowdin/Api/Download.php
+++ b/src/Akeneo/Crowdin/Api/Download.php
@@ -19,20 +19,17 @@ class Download extends AbstractApi
      */
     public function execute(): string
     {
-        $this->addUrlParameter('key', $this->client->getProjectApiKey());
-
         $path = sprintf(
-            "project/%s/download/%s?%s",
+            "project/%s/download/%s",
             $this->client->getProjectIdentifier(),
-            $this->package,
-            $this->getUrlQueryString()
+            $this->package
         );
         if (null !== $this->branch) {
             $path = sprintf('%s&branch=%s', $path, $this->branch);
         }
 
         $filePath = $this->getCopyDestination() . '/' . $this->getPackage();
-        $response = $this->client->getHttpClient()->request('GET', $path);
+        $response = $this->client->getHttpClient()->request('GET', $path, ['headers' => ['Authorization' => 'Bearer 1234']]);
 
         $fileContent = $response->getContent();
         file_put_contents($filePath, $fileContent);
diff --git a/src/Akeneo/Crowdin/Api/Export.php b/src/Akeneo/Crowdin/Api/Export.php
index 638539f..074a35c 100644
--- a/src/Akeneo/Crowdin/Api/Export.php
+++ b/src/Akeneo/Crowdin/Api/Export.php
@@ -17,17 +17,18 @@ class Export extends AbstractApi
      */
     public function execute(): string
     {
-        $this->addUrlParameter('key', $this->client->getProjectApiKey());
-
         $path = sprintf(
-            "project/%s/export?%s",
-            $this->client->getProjectIdentifier(),
-            $this->getUrlQueryString()
+            "project/%s/export",
+            $this->client->getProjectIdentifier()
         );
         if (null !== $this->branch) {
             $path = sprintf('%s&branch=%s', $path, $this->branch);
         }
-        $response = $this->client->getHttpClient()->request('GET', $path);
+        $response = $this->client->getHttpClient()->request(
+            'GET',
+            $path,
+            ['headers' => ['Authorization' => 'Bearer ' . $this->client->getProjectApiKey()]]
+        );
 
         return $response->getContent();
     }
diff --git a/src/Akeneo/Crowdin/Api/Info.php b/src/Akeneo/Crowdin/Api/Info.php
index c92290e..4ed880a 100644
--- a/src/Akeneo/Crowdin/Api/Info.php
+++ b/src/Akeneo/Crowdin/Api/Info.php
@@ -15,14 +15,15 @@ class Info extends AbstractApi
      */
     public function execute(): string
     {
-        $this->addUrlParameter('key', $this->client->getProjectApiKey());
-
         $path = sprintf(
-            "project/%s/info?%s",
-            $this->client->getProjectIdentifier(),
-            $this->getUrlQueryString()
+            "project/%s/info",
+            $this->client->getProjectIdentifier()
+        );
+        $response = $this->client->getHttpClient()->request(
+            'GET',
+            $path,
+            ['headers' => ['Authorization' => 'Bearer ' . $this->client->getProjectApiKey()]]
         );
-        $response = $this->client->getHttpClient()->request('GET', $path);
 
         return $response->getContent();
     }
diff --git a/src/Akeneo/Crowdin/Api/LanguageStatus.php b/src/Akeneo/Crowdin/Api/LanguageStatus.php
index 0f82988..070ae6e 100644
--- a/src/Akeneo/Crowdin/Api/LanguageStatus.php
+++ b/src/Akeneo/Crowdin/Api/LanguageStatus.php
@@ -27,11 +27,16 @@ public function getLanguage(): string
     public function execute()
     {
         $path = sprintf(
-            "project/%s/language-status?key=%s",
-            $this->client->getProjectIdentifier(),
-            $this->client->getProjectApiKey()
+            "project/%s/language-status",
+            $this->client->getProjectIdentifier()
+        );
+        $parameters = array_merge(
+            $this->parameters,
+            [
+                'headers' => ['Authorization' => 'Bearer ' . $this->client->getProjectApiKey()],
+                'body' => ['language' => $this->getLanguage()]
+            ]
         );
-        $parameters = array_merge($this->parameters, ['body' => ['language' => $this->getLanguage()]]);
         $response = $this->client->getHttpClient()->request('POST', $path, $parameters);
 
         return $response->getContent();
diff --git a/src/Akeneo/Crowdin/Api/Status.php b/src/Akeneo/Crowdin/Api/Status.php
index 0d22c6a..a0333bd 100644
--- a/src/Akeneo/Crowdin/Api/Status.php
+++ b/src/Akeneo/Crowdin/Api/Status.php
@@ -15,14 +15,15 @@ class Status extends AbstractApi
      */
     public function execute()
     {
-        $this->addUrlParameter('key', $this->client->getProjectApiKey());
-
         $path = sprintf(
-            "project/%s/status?%s",
-            $this->client->getProjectIdentifier(),
-            $this->getUrlQueryString()
+            "project/%s/status",
+            $this->client->getProjectIdentifier()
+        );
+        $response = $this->client->getHttpClient()->request(
+            'GET',
+            $path,
+            ['headers' => ['Authorization' => 'Bearer ' . $this->client->getProjectApiKey()]]
         );
-        $response = $this->client->getHttpClient()->request('GET', $path);
 
         return $response->getContent();
     }
diff --git a/src/Akeneo/Crowdin/Api/SupportedLanguages.php b/src/Akeneo/Crowdin/Api/SupportedLanguages.php
index 78f1e55..92dff94 100644
--- a/src/Akeneo/Crowdin/Api/SupportedLanguages.php
+++ b/src/Akeneo/Crowdin/Api/SupportedLanguages.php
@@ -22,7 +22,11 @@ public function execute()
         }
 
         $http = $this->client->getHttpClient();
-        $response = $http->request('GET', $path);
+        $response = $http->request(
+            'GET',
+            $path,
+            ['headers' => ['Authorization' => 'Bearer ' . $this->client->getProjectApiKey()]]
+        );
 
         return $response->getContent();
     }
diff --git a/src/Akeneo/Crowdin/Api/UpdateFile.php b/src/Akeneo/Crowdin/Api/UpdateFile.php
index 6043aa8..2e3224b 100644
--- a/src/Akeneo/Crowdin/Api/UpdateFile.php
+++ b/src/Akeneo/Crowdin/Api/UpdateFile.php
@@ -33,12 +33,9 @@ public function execute(): string
             throw new InvalidArgumentException('There is no files to update');
         }
 
-        $this->addUrlParameter('key', $this->client->getProjectApiKey());
-
         $path = sprintf(
-            "project/%s/update-file?%s",
-            $this->client->getProjectIdentifier(),
-            $this->getUrlQueryString()
+            "project/%s/update-file",
+            $this->client->getProjectIdentifier()
         );
 
         $data = $this->parameters;
@@ -58,6 +55,7 @@ public function execute(): string
 
         $data = [
             'headers' => [
+                'Authorization' => 'Bearer ' . $this->client->getProjectApiKey(),
                 'Content-Type' => 'multipart/form-data'
             ],
             'body' => $data
diff --git a/src/Akeneo/Crowdin/Api/UploadTranslation.php b/src/Akeneo/Crowdin/Api/UploadTranslation.php
index 19a46b3..7b26ace 100644
--- a/src/Akeneo/Crowdin/Api/UploadTranslation.php
+++ b/src/Akeneo/Crowdin/Api/UploadTranslation.php
@@ -46,12 +46,9 @@ public function execute(): string
             throw new InvalidArgumentException('Locale is not set.');
         }
 
-        $this->addUrlParameter('key', $this->client->getProjectApiKey());
-
         $path = sprintf(
-            "project/%s/upload-translation?%s",
-            $this->client->getProjectIdentifier(),
-            $this->getUrlQueryString()
+            "project/%s/upload-translation",
+            $this->client->getProjectIdentifier()
         );
 
         $data['import_duplicates'] = (int)$this->areDuplicatesImported;
@@ -69,6 +66,7 @@ public function execute(): string
 
         $data = [
             'headers' => [
+                'Authorization' => 'Bearer ' . $this->client->getProjectApiKey(),
                 'Content-Type' => 'multipart/form-data'
             ],
             'body' => $data