diff --git a/src/Symfony/Component/Messenger/Bridge/Amqp/Tests/Transport/ConnectionTest.php b/src/Symfony/Component/Messenger/Bridge/Amqp/Tests/Transport/ConnectionTest.php
index 81b8e45d858f9..103d3d0c61a97 100644
--- a/src/Symfony/Component/Messenger/Bridge/Amqp/Tests/Transport/ConnectionTest.php
+++ b/src/Symfony/Component/Messenger/Bridge/Amqp/Tests/Transport/ConnectionTest.php
@@ -21,6 +21,8 @@
 
 /**
  * @requires extension amqp
+ *
+ * @group time-sensitive
  */
 class ConnectionTest extends TestCase
 {
@@ -266,7 +268,7 @@ public function testItSetupsTheConnectionWithDefaults()
         );
 
         $amqpExchange->expects($this->once())->method('declareExchange');
-        $amqpExchange->expects($this->once())->method('publish')->with('body', null, AMQP_NOPARAM, ['headers' => [], 'delivery_mode' => 2]);
+        $amqpExchange->expects($this->once())->method('publish')->with('body', null, AMQP_NOPARAM, ['headers' => [], 'delivery_mode' => 2, 'timestamp' => time()]);
         $amqpQueue->expects($this->once())->method('declareQueue');
         $amqpQueue->expects($this->once())->method('bind')->with(self::DEFAULT_EXCHANGE_NAME, null);
 
@@ -289,7 +291,7 @@ public function testItSetupsTheConnection()
         $factory->method('createQueue')->will($this->onConsecutiveCalls($amqpQueue0, $amqpQueue1));
 
         $amqpExchange->expects($this->once())->method('declareExchange');
-        $amqpExchange->expects($this->once())->method('publish')->with('body', 'routing_key', AMQP_NOPARAM, ['headers' => [], 'delivery_mode' => 2]);
+        $amqpExchange->expects($this->once())->method('publish')->with('body', 'routing_key', AMQP_NOPARAM, ['headers' => [], 'delivery_mode' => 2, 'timestamp' => time()]);
         $amqpQueue0->expects($this->once())->method('declareQueue');
         $amqpQueue0->expects($this->exactly(2))->method('bind')->withConsecutive(
             [self::DEFAULT_EXCHANGE_NAME, 'binding_key0'],
@@ -326,7 +328,7 @@ public function testBindingArguments()
         $factory->method('createQueue')->willReturn($amqpQueue);
 
         $amqpExchange->expects($this->once())->method('declareExchange');
-        $amqpExchange->expects($this->once())->method('publish')->with('body', null, AMQP_NOPARAM, ['headers' => [], 'delivery_mode' => 2]);
+        $amqpExchange->expects($this->once())->method('publish')->with('body', null, AMQP_NOPARAM, ['headers' => [], 'delivery_mode' => 2, 'timestamp' => time()]);
         $amqpQueue->expects($this->once())->method('declareQueue');
         $amqpQueue->expects($this->exactly(1))->method('bind')->withConsecutive(
             [self::DEFAULT_EXCHANGE_NAME, null, ['x-match' => 'all']]
@@ -439,7 +441,7 @@ public function testItDelaysTheMessage()
         $delayQueue->expects($this->once())->method('declareQueue');
         $delayQueue->expects($this->once())->method('bind')->with('delays', 'delay_messages__5000');
 
-        $delayExchange->expects($this->once())->method('publish')->with('{}', 'delay_messages__5000', AMQP_NOPARAM, ['headers' => ['x-some-headers' => 'foo'], 'delivery_mode' => 2]);
+        $delayExchange->expects($this->once())->method('publish')->with('{}', 'delay_messages__5000', AMQP_NOPARAM, ['headers' => ['x-some-headers' => 'foo'], 'delivery_mode' => 2, 'timestamp' => time()]);
 
         $connection = Connection::fromDsn('amqp://localhost', [], $factory);
         $connection->publish('{}', ['x-some-headers' => 'foo'], 5000);
@@ -481,7 +483,7 @@ public function testItDelaysTheMessageWithADifferentRoutingKeyAndTTLs()
         $delayQueue->expects($this->once())->method('declareQueue');
         $delayQueue->expects($this->once())->method('bind')->with('delays', 'delay_messages__120000');
 
-        $delayExchange->expects($this->once())->method('publish')->with('{}', 'delay_messages__120000', AMQP_NOPARAM, ['headers' => [], 'delivery_mode' => 2]);
+        $delayExchange->expects($this->once())->method('publish')->with('{}', 'delay_messages__120000', AMQP_NOPARAM, ['headers' => [], 'delivery_mode' => 2, 'timestamp' => time()]);
         $connection->publish('{}', [], 120000);
     }
 
@@ -513,7 +515,7 @@ public function testAmqpStampHeadersAreUsed()
             $amqpExchange = $this->createMock(\AMQPExchange::class)
         );
 
-        $amqpExchange->expects($this->once())->method('publish')->with('body', null, AMQP_NOPARAM, ['headers' => ['Foo' => 'X', 'Bar' => 'Y'], 'delivery_mode' => 2]);
+        $amqpExchange->expects($this->once())->method('publish')->with('body', null, AMQP_NOPARAM, ['headers' => ['Foo' => 'X', 'Bar' => 'Y'], 'delivery_mode' => 2, 'timestamp' => time()]);
 
         $connection = Connection::fromDsn('amqp://localhost', [], $factory);
         $connection->publish('body', ['Foo' => 'X'], 0, new AmqpStamp(null, AMQP_NOPARAM, ['headers' => ['Bar' => 'Y']]));
@@ -528,7 +530,7 @@ public function testAmqpStampDelireryModeIsUsed()
             $amqpExchange = $this->createMock(\AMQPExchange::class)
         );
 
-        $amqpExchange->expects($this->once())->method('publish')->with('body', null, AMQP_NOPARAM, ['headers' => [], 'delivery_mode' => 1]);
+        $amqpExchange->expects($this->once())->method('publish')->with('body', null, AMQP_NOPARAM, ['headers' => [], 'delivery_mode' => 1, 'timestamp' => time()]);
 
         $connection = Connection::fromDsn('amqp://localhost', [], $factory);
         $connection->publish('body', [], 0, new AmqpStamp(null, AMQP_NOPARAM, ['delivery_mode' => 1]));
@@ -600,7 +602,7 @@ public function testItDelaysTheMessageWithTheInitialSuppliedRoutingKeyAsArgument
         $delayQueue->expects($this->once())->method('declareQueue');
         $delayQueue->expects($this->once())->method('bind')->with('delays', 'delay_messages_routing_key_120000');
 
-        $delayExchange->expects($this->once())->method('publish')->with('{}', 'delay_messages_routing_key_120000', AMQP_NOPARAM, ['headers' => [], 'delivery_mode' => 2]);
+        $delayExchange->expects($this->once())->method('publish')->with('{}', 'delay_messages_routing_key_120000', AMQP_NOPARAM, ['headers' => [], 'delivery_mode' => 2, 'timestamp' => time()]);
         $connection->publish('{}', [], 120000, new AmqpStamp('routing_key'));
     }
 
@@ -617,7 +619,7 @@ public function testItCanPublishWithCustomFlagsAndAttributes()
             'body',
             'routing_key',
             AMQP_IMMEDIATE,
-            ['delivery_mode' => 2, 'headers' => ['type' => DummyMessage::class]]
+            ['delivery_mode' => 2, 'headers' => ['type' => DummyMessage::class], 'timestamp' => time()]
         );
 
         $connection = Connection::fromDsn('amqp://localhost', [], $factory);
diff --git a/src/Symfony/Component/Messenger/Bridge/Amqp/Transport/Connection.php b/src/Symfony/Component/Messenger/Bridge/Amqp/Transport/Connection.php
index 97d2f7672f3b8..7b9f49fa3a9a0 100644
--- a/src/Symfony/Component/Messenger/Bridge/Amqp/Transport/Connection.php
+++ b/src/Symfony/Component/Messenger/Bridge/Amqp/Transport/Connection.php
@@ -317,6 +317,7 @@ private function publishOnExchange(\AMQPExchange $exchange, string $body, string
         $attributes = $amqpStamp ? $amqpStamp->getAttributes() : [];
         $attributes['headers'] = array_merge($attributes['headers'] ?? [], $headers);
         $attributes['delivery_mode'] = $attributes['delivery_mode'] ?? 2;
+        $attributes['timestamp'] = $attributes['timestamp'] ?? time();
 
         $exchange->publish(
             $body,

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