diff --git a/spring-cloud-stream-binder-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/support/AbstractRocketMQHeaderMapper.java b/spring-cloud-stream-binder-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/support/AbstractRocketMQHeaderMapper.java
index be14bb38..79f47eb8 100644
--- a/spring-cloud-stream-binder-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/support/AbstractRocketMQHeaderMapper.java
+++ b/spring-cloud-stream-binder-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/support/AbstractRocketMQHeaderMapper.java
@@ -11,8 +11,7 @@ import org.springframework.util.Assert;
  * Base for RocketMQ header mappers.
  *
  * @author caotc
- * @date 2019-08-22
- * @since 2.1.1
+ * @since 2.1.1.RELEASE
  */
 public abstract class AbstractRocketMQHeaderMapper implements RocketMQHeaderMapper {
 	private static final Charset DEFAULT_CHARSET = StandardCharsets.UTF_8;
diff --git a/spring-cloud-stream-binder-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/support/JacksonRocketMQHeaderMapper.java b/spring-cloud-stream-binder-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/support/JacksonRocketMQHeaderMapper.java
index 91c5abdf..af56b534 100644
--- a/spring-cloud-stream-binder-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/support/JacksonRocketMQHeaderMapper.java
+++ b/spring-cloud-stream-binder-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/support/JacksonRocketMQHeaderMapper.java
@@ -20,8 +20,7 @@ import com.google.common.collect.Maps;
  * {@link #JSON_TYPES}.
  *
  * @author caotc
- * @date 2019-08-22
- * @since 2.1.1
+ * @since 2.1.1.RELEASE
  */
 public class JacksonRocketMQHeaderMapper extends AbstractRocketMQHeaderMapper {
 	private final static Logger log = LoggerFactory
diff --git a/spring-cloud-stream-binder-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/support/RocketMQHeaderMapper.java b/spring-cloud-stream-binder-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/support/RocketMQHeaderMapper.java
index ee599444..acc5ae8d 100644
--- a/spring-cloud-stream-binder-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/support/RocketMQHeaderMapper.java
+++ b/spring-cloud-stream-binder-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/support/RocketMQHeaderMapper.java
@@ -8,8 +8,7 @@ import org.springframework.messaging.MessageHeaders;
  * header value mapper for RocketMQ
  *
  * @author caotc
- * @date 2019-08-22
- * @since 2.1.1
+ * @since 2.1.1.RELEASE
  */
 public interface RocketMQHeaderMapper {
 	/**