diff --git a/oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/analysis/manual/segment/SpanTag.java b/oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/analysis/manual/segment/SpanTag.java
index 976bf5737..0a96fc9a6 100644
--- a/oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/analysis/manual/segment/SpanTag.java
+++ b/oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/analysis/manual/segment/SpanTag.java
@@ -21,19 +21,21 @@ package org.apache.skywalking.oap.server.core.analysis.manual.segment;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
+import lombok.AllArgsConstructor;
 import lombok.EqualsAndHashCode;
 import lombok.Getter;
-import lombok.RequiredArgsConstructor;
+import lombok.NoArgsConstructor;
 import lombok.Setter;
 import org.apache.skywalking.oap.server.library.util.CollectionUtils;
 
 @Getter
 @Setter
 @EqualsAndHashCode
-@RequiredArgsConstructor
+@NoArgsConstructor
+@AllArgsConstructor
 public class SpanTag {
-    private final String key;
-    private final String value;
+    private String key;
+    private String value;
 
     @Override
     public String toString() {