diff --git a/hutool-http/src/main/java/org/dromara/hutool/http/meta/HttpHeaderUtil.java b/hutool-http/src/main/java/org/dromara/hutool/http/meta/HttpHeaderUtil.java
index 647d68acd..69f078db5 100644
--- a/hutool-http/src/main/java/org/dromara/hutool/http/meta/HttpHeaderUtil.java
+++ b/hutool-http/src/main/java/org/dromara/hutool/http/meta/HttpHeaderUtil.java
@@ -29,6 +29,7 @@ import java.util.Map;
 /**
  * HTTP头相关方法<br>
  * 相关规范见：https://www.rfc-editor.org/rfc/rfc5987
+ * TODO Rfc5987 extended value需要单独解析
  *
  * @author Looly
  * @since 6.0.0