diff --git a/paimon-filesystems/paimon-cosn/src/main/java/org/apache/paimon/cosn/COSNLoader.java b/paimon-filesystems/paimon-cosn/src/main/java/org/apache/paimon/cosn/COSNLoader.java
index 35b6c1ff28d1..887ea479be4e 100644
--- a/paimon-filesystems/paimon-cosn/src/main/java/org/apache/paimon/cosn/COSNLoader.java
+++ b/paimon-filesystems/paimon-cosn/src/main/java/org/apache/paimon/cosn/COSNLoader.java
@@ -30,6 +30,9 @@
 
 /** A {@link PluginLoader} to load cosn. */
 public class COSNLoader implements FileIOLoader {
+
+    private static final long serialVersionUID = 1L;
+
     private static final String COSN_JAR = "paimon-plugin-cosn";
     private static final String COSN_CLASS = "org.apache.paimon.cosn.COSNFileIO";
     // Singleton lazy initialization