diff --git a/src/main/java/org/redisson/codec/JsonJacksonCodec.java b/src/main/java/org/redisson/codec/JsonJacksonCodec.java
index 4e177801f..811abafff 100644
--- a/src/main/java/org/redisson/codec/JsonJacksonCodec.java
+++ b/src/main/java/org/redisson/codec/JsonJacksonCodec.java
@@ -80,7 +80,7 @@ public class JsonJacksonCodec implements RedissonCodec {
         mapObjectMapper.setDefaultTyping(mapTyper);
     }
 
-    private void init(ObjectMapper objectMapper) {
+    protected void init(ObjectMapper objectMapper) {
         objectMapper.setSerializationInclusion(Include.NON_NULL);
         objectMapper.setVisibilityChecker(objectMapper.getSerializationConfig().getDefaultVisibilityChecker()
                                             .withFieldVisibility(JsonAutoDetect.Visibility.ANY)