diff --git a/src/main/java/org/tikv/br/BackupDecoder.java b/src/main/java/org/tikv/br/BackupDecoder.java
index fb63d63ee46..c36e6194cf7 100644
--- a/src/main/java/org/tikv/br/BackupDecoder.java
+++ b/src/main/java/org/tikv/br/BackupDecoder.java
@@ -17,12 +17,13 @@
 
 package org.tikv.br;
 
+import java.io.Serializable;
 import org.rocksdb.Options;
 import org.rocksdb.ReadOptions;
 import org.tikv.common.exception.SSTDecodeException;
 import org.tikv.kvproto.Brpb;
 
-public class BackupDecoder {
+public class BackupDecoder implements Serializable {
   private final Brpb.BackupMeta backupMeta;
   private final boolean ttlEnabled;
   private final KVDecoder kvDecoder;
diff --git a/src/main/java/org/tikv/br/KVDecoder.java b/src/main/java/org/tikv/br/KVDecoder.java
index 1f0b580c1a4..f365c269f34 100644
--- a/src/main/java/org/tikv/br/KVDecoder.java
+++ b/src/main/java/org/tikv/br/KVDecoder.java
@@ -18,8 +18,9 @@
 package org.tikv.br;
 
 import com.google.protobuf.ByteString;
+import java.io.Serializable;
 
-public interface KVDecoder {
+public interface KVDecoder extends Serializable {
   ByteString decodeKey(byte[] key);
 
   ByteString decodeValue(byte[] value);