diff --git a/src/main/java/com/bsmlab/dfx/agent/support/MessageUtils.java b/src/main/java/com/bsmlab/dfx/agent/support/MessageUtils.java
index 364f44e..c5e57dc 100644
--- a/src/main/java/com/bsmlab/dfx/agent/support/MessageUtils.java
+++ b/src/main/java/com/bsmlab/dfx/agent/support/MessageUtils.java
@@ -8,7 +8,10 @@ import com.bsmlab.dfx.agent.listener.dto.ReceiveMessageDto;
 import com.bsmlab.dfx.agent.support.exception.IllegalMessageException;
 import com.bsmlab.dfx.agent.support.exception.InCompleteMessageException;
 import com.bsmlab.dfx.agent.support.exception.NullMessageException;
+import com.fasterxml.jackson.core.JsonFactory;
+import com.fasterxml.jackson.core.JsonFactoryBuilder;
 import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.core.StreamReadConstraints;
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.extern.slf4j.Slf4j;
@@ -23,7 +26,12 @@ import java.util.*;
 
 @Slf4j
 public class MessageUtils {
-    private static final ObjectMapper objectMapper = new ObjectMapper();
+    private static final ObjectMapper objectMapper;
+    static {
+        StreamReadConstraints constraints = StreamReadConstraints.builder().maxStringLength(500_000_000).build();
+        JsonFactory jsonFactory = new JsonFactoryBuilder().streamReadConstraints(constraints).build();
+        objectMapper = new ObjectMapper(jsonFactory);
+    }
 
     private MessageUtils() {};