diff --git a/src/Serilog.Sinks.RabbitMQ/Sinks/RabbitMQ/RabbitMQSink.cs b/src/Serilog.Sinks.RabbitMQ/Sinks/RabbitMQ/RabbitMQSink.cs
index 8021498..51330d7 100644
--- a/src/Serilog.Sinks.RabbitMQ/Sinks/RabbitMQ/RabbitMQSink.cs
+++ b/src/Serilog.Sinks.RabbitMQ/Sinks/RabbitMQ/RabbitMQSink.cs
@@ -12,7 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-using System.Buffers;
 using System.Text;
 using Microsoft.IO;
 using Serilog.Core;
diff --git a/tests/Serilog.Sinks.RabbitMQ.Tests.Integration/RabbitMQFixture.cs b/tests/Serilog.Sinks.RabbitMQ.Tests.Integration/RabbitMQFixture.cs
index 27caec1..c45f477 100644
--- a/tests/Serilog.Sinks.RabbitMQ.Tests.Integration/RabbitMQFixture.cs
+++ b/tests/Serilog.Sinks.RabbitMQ.Tests.Integration/RabbitMQFixture.cs
@@ -73,8 +73,6 @@ public static RabbitMQClientConfiguration GetRabbitMQSslClientConfiguration()
             Port = 5671,
             DeliveryMode = RabbitMQDeliveryMode.Durable,
             Exchange = SerilogSinkExchange,
-            Username = UserName,
-            Password = Password,
             ExchangeType = SerilogSinkExchangeType,
             Hostnames = [SslCertHostName],
             SslOption = new SslOption