diff --git a/src/Symfony/Component/Notifier/Bridge/Twitter/Tests/TwitterTransportTest.php b/src/Symfony/Component/Notifier/Bridge/Twitter/Tests/TwitterTransportTest.php
index 4b34b2257becb..f77fb2ebabf64 100644
--- a/src/Symfony/Component/Notifier/Bridge/Twitter/Tests/TwitterTransportTest.php
+++ b/src/Symfony/Component/Notifier/Bridge/Twitter/Tests/TwitterTransportTest.php
@@ -66,7 +66,9 @@ public function testTweetImage()
         $transport = $this->createTransport(new MockHttpClient((function () {
             yield function (string $method, string $url, array $options) {
                 $this->assertSame('POST', $method);
-                $this->assertSame('https://upload.twitter.com/1.1/media/upload.json?command=INIT&total_bytes=185&media_type=image/gif&media_category=tweet_image', $url);
+                $this->assertSame('https://upload.twitter.com/1.1/media/upload.json', $url);
+                $this->assertArrayHasKey('body', $options);
+                $this->assertSame($options['body'], 'command=INIT&total_bytes=185&media_type=image%2Fgif&media_category=tweet_image');
                 $this->assertArrayHasKey('authorization', $options['normalized_headers']);
 
                 return new MockResponse('{"media_id_string":"gif123"}');
@@ -127,7 +129,9 @@ public function testTweetVideo()
         $transport = $this->createTransport(new MockHttpClient((function () {
             yield function (string $method, string $url, array $options) {
                 $this->assertSame('POST', $method);
-                $this->assertSame('https://upload.twitter.com/1.1/media/upload.json?command=INIT&total_bytes=185&media_type=image/gif&media_category=tweet_video', $url);
+                $this->assertSame('https://upload.twitter.com/1.1/media/upload.json', $url);
+                $this->assertArrayHasKey('body', $options);
+                $this->assertSame($options['body'], 'command=INIT&total_bytes=185&media_type=image%2Fgif&media_category=tweet_video');
                 $this->assertArrayHasKey('authorization', $options['normalized_headers']);
 
                 return new MockResponse('{"media_id_string":"gif123"}');
@@ -135,7 +139,9 @@ public function testTweetVideo()
 
             yield function (string $method, string $url, array $options) {
                 $this->assertSame('POST', $method);
-                $this->assertSame('https://upload.twitter.com/1.1/media/upload.json?command=INIT&total_bytes=185&media_type=image/gif&media_category=subtitles', $url);
+                $this->assertSame('https://upload.twitter.com/1.1/media/upload.json', $url);
+                $this->assertArrayHasKey('body', $options);
+                $this->assertSame($options['body'], 'command=INIT&total_bytes=185&media_type=image%2Fgif&media_category=subtitles');
                 $this->assertArrayHasKey('authorization', $options['normalized_headers']);
 
                 return new MockResponse('{"media_id_string":"sub234"}');
diff --git a/src/Symfony/Component/Notifier/Bridge/Twitter/TwitterTransport.php b/src/Symfony/Component/Notifier/Bridge/Twitter/TwitterTransport.php
index dda25e5e70bec..686c61bb102bf 100644
--- a/src/Symfony/Component/Notifier/Bridge/Twitter/TwitterTransport.php
+++ b/src/Symfony/Component/Notifier/Bridge/Twitter/TwitterTransport.php
@@ -160,32 +160,32 @@ private function uploadMedia(array $media): array
             'category' => $category,
             'owners' => $extraOwners,
         ]) {
-            $query = [
+            $body = [
                 'command' => 'INIT',
                 'total_bytes' => $file->getSize(),
                 'media_type' => $file->getContentType(),
             ];
 
             if ($category) {
-                $query['media_category'] = $category;
+                $body['media_category'] = $category;
             }
 
             if ($extraOwners) {
-                $query['additional_owners'] = implode(',', $extraOwners);
+                $body['additional_owners'] = implode(',', $extraOwners);
             }
 
             $pool[++$i] = $this->request('POST', '/1.1/media/upload.json', [
-                'query' => $query,
+                'body' => $body,
                 'user_data' => [$i, null, 0, fopen($file->getPath(), 'r'), $alt, $subtitles],
             ]);
 
             if ($subtitles) {
-                $query['total_bytes'] = $subtitles->getSize();
-                $query['media_type'] = $subtitles->getContentType();
-                $query['media_category'] = 'subtitles';
+                $body['total_bytes'] = $subtitles->getSize();
+                $body['media_type'] = $subtitles->getContentType();
+                $body['media_category'] = 'subtitles';
 
                 $pool[++$i] = $this->request('POST', '/1.1/media/upload.json', [
-                    'query' => $query,
+                    'body' => $body,
                     'user_data' => [$i, null, 0, fopen($subtitles->getPath(), 'r'), null, $subtitles],
                 ]);
             }