diff --git a/docs/en/changes/changes.md b/docs/en/changes/changes.md
index 0bf4669869..081ca8aae2 100644
--- a/docs/en/changes/changes.md
+++ b/docs/en/changes/changes.md
@@ -29,6 +29,7 @@
 * Remove abandon logic in MergableBufferedData, which caused unexpected no-update.
 * Fix miss set `LastUpdateTimestamp` that caused the metrics session to expire.
 * Rename MAL rule `spring-sleuth.yaml` to `spring-micrometer.yaml`.
+* Fix memory leak in Zipkin API.
 
 #### UI
 
diff --git a/oap-server/server-receiver-plugin/zipkin-receiver-plugin/src/main/java/org/apache/skywalking/oap/server/receiver/zipkin/handler/ZipkinSpanHTTPHandler.java b/oap-server/server-receiver-plugin/zipkin-receiver-plugin/src/main/java/org/apache/skywalking/oap/server/receiver/zipkin/handler/ZipkinSpanHTTPHandler.java
index 02dc0f8a81..2acaa9d848 100644
--- a/oap-server/server-receiver-plugin/zipkin-receiver-plugin/src/main/java/org/apache/skywalking/oap/server/receiver/zipkin/handler/ZipkinSpanHTTPHandler.java
+++ b/oap-server/server-receiver-plugin/zipkin-receiver-plugin/src/main/java/org/apache/skywalking/oap/server/receiver/zipkin/handler/ZipkinSpanHTTPHandler.java
@@ -100,10 +100,11 @@ public class ZipkinSpanHTTPHandler {
                                 final HttpRequest req) {
         final HistogramMetrics.Timer timer = histogram.createTimer();
         final HttpResponse response = HttpResponse.from(req.aggregate().thenApply(request -> {
-            final HttpData httpData = UnzippingBytesRequestConverter.convertRequest(ctx, request);
-            final List<Span> spanList = decoder.decodeList(httpData.byteBuf().nioBuffer());
-            spanForward.send(spanList);
-            return HttpResponse.of(HttpStatus.OK);
+            try (final HttpData httpData = UnzippingBytesRequestConverter.convertRequest(ctx, request)) {
+                final List<Span> spanList = decoder.decodeList(httpData.byteBuf().nioBuffer());
+                spanForward.send(spanList);
+                return HttpResponse.of(HttpStatus.OK);
+            }
         }));
         response.whenComplete().handle((unused, throwable) -> {
             if (nonNull(throwable)) {