diff --git a/pulsar-admin-jdk/src/main/java/io/github/protocol/pulsar/admin/jdk/SubscriptionStats.java b/pulsar-admin-jdk/src/main/java/io/github/protocol/pulsar/admin/jdk/SubscriptionStats.java
index d35ec66..1c463a0 100644
--- a/pulsar-admin-jdk/src/main/java/io/github/protocol/pulsar/admin/jdk/SubscriptionStats.java
+++ b/pulsar-admin-jdk/src/main/java/io/github/protocol/pulsar/admin/jdk/SubscriptionStats.java
@@ -32,7 +32,7 @@ public class SubscriptionStats {
 
     public int chunkedMessageRate;
 
-    public int msgBacklog;
+    public long msgBacklog;
 
     public long backlogSize;