diff --git a/README.md b/README.md
index e902e837f26b7c641cb96dd142a5212d734fb725..d053148b96e4513a470ecfa8392ca1f8ab0ac89b 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,11 @@
 
 [**更新记录**](CHANGELOG.md)
 
+## 版本号说明
+`release` 版本号格式为 `x.x.x.发版当然日期`。
+
+`snapshots` 版本号格式为 `x.x.x-SNAPSHOT`，`snapshots` 版每次提交后会自动构建。
+
 ## 已知问题
 lombok 生成的 method 问题：https://github.com/rzwitserloot/lombok/issues/1861
 
diff --git a/gradle.properties b/gradle.properties
index 44c0604948c2298d67a4243d738ae3516764f07d..8b75955fa37616382d1ce30cab4b36f45f95aa54 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,4 +1,4 @@
-VERSION=2.0.1.200509-SNAPSHOT
+VERSION=2.0.1-SNAPSHOT
 GROUPID=net.dreamlu
 
 NEXUS_OSS_USER_NAME=***
diff --git a/mica-redis/src/main/java/net/dreamlu/mica/redis/config/RedisTemplateConfiguration.java b/mica-redis/src/main/java/net/dreamlu/mica/redis/config/RedisTemplateConfiguration.java
index fc48d7980d56f4032385b116adf3085e10504569..e0b3ecf12c335d5eb884b13881b0d0aca00a2cc5 100644
--- a/mica-redis/src/main/java/net/dreamlu/mica/redis/config/RedisTemplateConfiguration.java
+++ b/mica-redis/src/main/java/net/dreamlu/mica/redis/config/RedisTemplateConfiguration.java
@@ -16,7 +16,9 @@
 
 package net.dreamlu.mica.redis.config;
 
+import com.fasterxml.jackson.annotation.JsonTypeInfo.As;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.ObjectMapper.DefaultTyping;
 import net.dreamlu.mica.redis.cache.MicaRedisCache;
 import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.boot.autoconfigure.AutoConfigureBefore;
@@ -60,7 +62,11 @@ public class RedisTemplateConfiguration {
 		}
 		// jackson findAndRegisterModules，use copy
 		ObjectMapper objectMapper = objectProvider.getIfAvailable(ObjectMapper::new).copy();
+		// findAndRegisterModules
 		objectMapper.findAndRegisterModules();
+		// class type info to json
+		GenericJackson2JsonRedisSerializer.registerNullValueSerializer(objectMapper, null);
+		objectMapper.activateDefaultTyping(objectMapper.getPolymorphicTypeValidator(), DefaultTyping.NON_FINAL, As.PROPERTY);
 		return new GenericJackson2JsonRedisSerializer(objectMapper);
 	}