diff --git a/serializer/seata-serializer-kryo/src/main/java/io/seata/serializer/kryo/KryoSerializerFactory.java b/serializer/seata-serializer-kryo/src/main/java/io/seata/serializer/kryo/KryoSerializerFactory.java
index d23e46211f7..ceec54221e8 100644
--- a/serializer/seata-serializer-kryo/src/main/java/io/seata/serializer/kryo/KryoSerializerFactory.java
+++ b/serializer/seata-serializer-kryo/src/main/java/io/seata/serializer/kryo/KryoSerializerFactory.java
@@ -19,10 +19,7 @@
 import java.math.BigDecimal;
 import java.math.BigInteger;
 import java.net.URI;
-import java.util.Arrays;
-import java.util.BitSet;
-import java.util.GregorianCalendar;
-import java.util.UUID;
+import java.util.*;
 import java.util.regex.Pattern;
 import com.esotericsoftware.kryo.Kryo;
 import com.esotericsoftware.kryo.serializers.DefaultSerializers;
@@ -52,7 +49,7 @@ protected Kryo create() {
             kryo.setRegistrationRequired(false);
 
             // register serializer
-            kryo.register(Arrays.asList("").getClass(), new ArraysAsListSerializer());
+            kryo.register(Collections.singletonList("").getClass(), new ArraysAsListSerializer());
             kryo.register(GregorianCalendar.class, new GregorianCalendarSerializer());
             kryo.register(InvocationHandler.class, new JdkProxySerializer());
             kryo.register(BigDecimal.class, new DefaultSerializers.BigDecimalSerializer());