diff --git a/DependencyInjection/DoctrineExtension.php b/DependencyInjection/DoctrineExtension.php
index 2d6183d79..ac7d338f4 100644
--- a/DependencyInjection/DoctrineExtension.php
+++ b/DependencyInjection/DoctrineExtension.php
@@ -27,6 +27,7 @@
 use Symfony\Component\Messenger\Transport\Doctrine\DoctrineTransportFactory;
 use Symfony\Component\PropertyInfo\PropertyInfoExtractorInterface;
 use function class_exists;
+use function in_array;
 use function sprintf;
 
 /**
@@ -199,6 +200,14 @@ protected function getConnectionOptions($connection)
     {
         $options = $connection;
 
+        if (! isset($options['charset'])) {
+            if (isset($options['url'])) {
+                $options['charset'] = strpos($options['url'], 'mysql') === 0 ? 'utf8mb4' : 'utf8';
+            } else {
+                $options['charset'] = in_array($options['driver'], ['mysqli', 'pdo_mysql'], true) ? 'utf8mb4' : 'utf8';
+            }
+        }
+
         if (isset($options['platform_service'])) {
             $options['platform'] = new Reference($options['platform_service']);
             unset($options['platform_service']);
diff --git a/Tests/DependencyInjection/AbstractDoctrineExtensionTest.php b/Tests/DependencyInjection/AbstractDoctrineExtensionTest.php
index 9e5c3b223..b4590a851 100644
--- a/Tests/DependencyInjection/AbstractDoctrineExtensionTest.php
+++ b/Tests/DependencyInjection/AbstractDoctrineExtensionTest.php
@@ -123,6 +123,7 @@ public function testDbalLoadSingleMasterSlaveConnection()
                 'dbname' => 'mysql_db',
                 'host' => 'localhost',
                 'unix_socket' => '/path/to/mysqld.sock',
+                'charset' => 'utf8mb4',
             ],
             $param['master']
         );
@@ -157,6 +158,7 @@ public function testDbalLoadPoolShardingConnection()
                 'dbname' => 'mysql_db',
                 'host' => 'localhost',
                 'unix_socket' => '/path/to/mysqld.sock',
+                'charset' => 'utf8mb4',
             ],
             $param['global']
         );
@@ -207,6 +209,7 @@ public function testLoadSimpleSingleConnection()
                 'driver' => 'pdo_mysql',
                 'driverOptions' => [],
                 'defaultTableOptions' => [],
+                'charset' => 'utf8mb4',
             ],
             new Reference('doctrine.dbal.default_connection.configuration'),
             new Reference('doctrine.dbal.default_connection.event_manager'),
@@ -242,6 +245,7 @@ public function testLoadSimpleSingleConnectionWithoutDbName()
                 'driver' => 'pdo_mysql',
                 'driverOptions' => [],
                 'defaultTableOptions' => [],
+                'charset' => 'utf8mb4',
             ],
             new Reference('doctrine.dbal.default_connection.configuration'),
             new Reference('doctrine.dbal.default_connection.event_manager'),
@@ -278,6 +282,7 @@ public function testLoadSingleConnection()
                 'dbname' => 'sqlite_db',
                 'memory' => true,
                 'defaultTableOptions' => [],
+                'charset' => 'utf8',
             ],
             new Reference('doctrine.dbal.default_connection.configuration'),
             new Reference('doctrine.dbal.default_connection.event_manager'),