diff --git a/pom.xml b/pom.xml
index 788b75e..2ac90f7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -18,6 +18,7 @@
 
     <properties>
         <gson.version>2.8.2</gson.version>
+        <jackson.mapper.version>1.9.13</jackson.mapper.version>
         <protobuf-java.version>3.5.1</protobuf-java.version>
     </properties>
 
@@ -27,6 +28,11 @@
             <artifactId>gson</artifactId>
             <version>${gson.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.codehaus.jackson</groupId>
+            <artifactId>jackson-mapper-asl</artifactId>
+            <version>${jackson.mapper.version}</version>
+        </dependency>
 
         <dependency>
             <groupId>com.google.protobuf</groupId>
diff --git a/src/main/java/com/loafle/commons/rpc/protocol/json/JSONRPCServerCodec.java b/src/main/java/com/loafle/commons/rpc/protocol/json/JSONRPCServerCodec.java
index 4e50637..42b6eb8 100644
--- a/src/main/java/com/loafle/commons/rpc/protocol/json/JSONRPCServerCodec.java
+++ b/src/main/java/com/loafle/commons/rpc/protocol/json/JSONRPCServerCodec.java
@@ -1,40 +1,46 @@
 package com.loafle.commons.rpc.protocol.json;
 
-import com.google.gson.Gson;
+import java.io.IOException;
+
 import com.loafle.commons.rpc.RPCException;
 import com.loafle.commons.rpc.protocol.RPCServerCodec;
 import com.loafle.commons.rpc.protocol.RPCServerRequestCodec;
 
+import org.codehaus.jackson.map.DeserializationConfig;
+import org.codehaus.jackson.map.ObjectMapper;
+
 /**
  * JSONRPCServerCodec
  */
 public class JSONRPCServerCodec implements RPCServerCodec {
-  private Gson gson;
+  private ObjectMapper objectMapper;
 
   public JSONRPCServerCodec() {
-    this.gson = new Gson();
-  }
-  public JSONRPCServerCodec(Gson gson) {
-    this.gson = gson;
+    this.objectMapper = new ObjectMapper();
+    this.objectMapper.configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);
   }
 
-  public void setGson(Gson gson) {
-    this.gson = gson;
+  public JSONRPCServerCodec(ObjectMapper objectMapper) {
+    this.objectMapper = objectMapper;
   }
 
-  public Gson getGson() {
-    return this.gson;
+  public void setObjectMapper(ObjectMapper objectMapper) {
+    this.objectMapper = objectMapper;
   }
 
   public RPCServerRequestCodec request(byte[] buff) throws RPCException {
-    return new JSONRPCServerRequestCodec(this.gson, buff);
+    return new JSONRPCServerRequestCodec(this.objectMapper, buff);
   }
 
   public byte[] notification(String method, Object... params) throws RPCException {
     JSONServerNotification notification = new JSONServerNotification(method, params);
     JSONServerResponse response = new JSONServerResponse(JSONRPC.version, notification, null);
 
-    String json = this.gson.toJson(response);
-    return json.getBytes();
+    try {
+      String json = this.objectMapper.writeValueAsString(response);
+      return json.getBytes();
+    } catch (IOException e) {
+      throw new RPCException("cannot marsharling", e);
+    }
   }
 }
diff --git a/src/main/java/com/loafle/commons/rpc/protocol/json/JSONRPCServerRequestCodec.java b/src/main/java/com/loafle/commons/rpc/protocol/json/JSONRPCServerRequestCodec.java
index 891e0a2..6ab1fa2 100644
--- a/src/main/java/com/loafle/commons/rpc/protocol/json/JSONRPCServerRequestCodec.java
+++ b/src/main/java/com/loafle/commons/rpc/protocol/json/JSONRPCServerRequestCodec.java
@@ -1,27 +1,29 @@
 package com.loafle.commons.rpc.protocol.json;
 
+import java.io.IOException;
 import java.lang.reflect.Type;
 
-import com.google.gson.Gson;
-import com.google.gson.JsonSyntaxException;
+import com.google.gson.internal.Primitives;
 import com.loafle.commons.rpc.RPCException;
 import com.loafle.commons.rpc.protocol.RPCError;
 import com.loafle.commons.rpc.protocol.RPCServerRequestCodec;
 
+import org.codehaus.jackson.map.ObjectMapper;
+import org.codehaus.jackson.type.JavaType;
+
 /**
  * JSONRPCServerRequestCodec
  */
 class JSONRPCServerRequestCodec implements RPCServerRequestCodec {
-  private Gson gson;
+  private ObjectMapper objectMapper;
   private JSONServerRequest request;
 
-  public JSONRPCServerRequestCodec(Gson gson, byte[] buff) throws RPCException {
-    this.gson = gson;
-    String json = new String(buff);
+  public JSONRPCServerRequestCodec(ObjectMapper objectMapper, byte[] buff) throws RPCException {
+    this.objectMapper = objectMapper;
     try {
-      this.request = this.gson.fromJson(json, JSONServerRequest.class);
-    } catch (JsonSyntaxException e) {
-      throw new RPCException("request is not valied", json);
+      this.request = this.objectMapper.readValue(buff, JSONServerRequest.class);
+    } catch (IOException e) {
+      throw new RPCException("cannot unmarsharling", e);
     }
   }
 
@@ -39,7 +41,8 @@ class JSONRPCServerRequestCodec implements RPCServerRequestCodec {
     }
 
     if (paramTypes.length != this.request.params.size()) {
-      throw new RPCException(String.format("The size of params[%d] and types[%d] is not same", this.request.params.size(), paramTypes.length));
+      throw new RPCException(String.format("The size of params[%d] and types[%d] is not same",
+          this.request.params.size(), paramTypes.length));
     }
 
     Object[] result = new Object[paramTypes.length];
@@ -48,7 +51,15 @@ class JSONRPCServerRequestCodec implements RPCServerRequestCodec {
       Type paramType = paramTypes[i];
       String param = this.request.params.get(i);
 
-      result[i] = this.gson.fromJson(param, paramType);
+      JavaType targetType = objectMapper.getTypeFactory().constructType(paramType);
+      if (!Primitives.isPrimitive(paramType) && !paramType.getTypeName().equals(String.class.getName())) {
+        try {
+          result[i] = objectMapper.readValue(param, targetType);
+        } catch (IOException e) {
+          throw new IllegalArgumentException();
+        }
+      }
+      result[i] = objectMapper.convertValue(param, targetType);
     }
 
     return result;
@@ -66,7 +77,11 @@ class JSONRPCServerRequestCodec implements RPCServerRequestCodec {
     JSONServerResponse response = new JSONServerResponse(JSONRPC.version, reply, rpcError);
     response.id = this.request.id;
 
-    String json = this.gson.toJson(response);
-    return json.getBytes();
+    try {
+      String json = this.objectMapper.writeValueAsString(response);
+      return json.getBytes();
+    } catch (IOException e) {
+      throw new RPCException("cannot marsharling", e);
+    }
   }
 }
\ No newline at end of file
diff --git a/src/main/java/com/loafle/commons/rpc/protocol/json/JSONServerNotification.java b/src/main/java/com/loafle/commons/rpc/protocol/json/JSONServerNotification.java
index b5a94e5..8bb2d72 100644
--- a/src/main/java/com/loafle/commons/rpc/protocol/json/JSONServerNotification.java
+++ b/src/main/java/com/loafle/commons/rpc/protocol/json/JSONServerNotification.java
@@ -1,7 +1,5 @@
 package com.loafle.commons.rpc.protocol.json;
 
-import com.google.gson.annotations.SerializedName;
-
 /**
  * JSONServerNotification
  */
diff --git a/src/main/java/com/loafle/commons/rpc/protocol/json/JSONServerRequest.java b/src/main/java/com/loafle/commons/rpc/protocol/json/JSONServerRequest.java
index 963a1a7..295a152 100644
--- a/src/main/java/com/loafle/commons/rpc/protocol/json/JSONServerRequest.java
+++ b/src/main/java/com/loafle/commons/rpc/protocol/json/JSONServerRequest.java
@@ -2,13 +2,13 @@ package com.loafle.commons.rpc.protocol.json;
 
 import java.util.List;
 
-import com.google.gson.annotations.SerializedName;
+import org.codehaus.jackson.annotate.JsonProperty;
 
 /**
  * JSONServerRequest
  */
 class JSONServerRequest {
-  @SerializedName("jsonrpc")
+  @JsonProperty("jsonrpc")
   public String version;
   public String method;
   public List<String> params;
diff --git a/src/main/java/com/loafle/commons/rpc/protocol/json/JSONServerResponse.java b/src/main/java/com/loafle/commons/rpc/protocol/json/JSONServerResponse.java
index 1c13db9..f093e2e 100644
--- a/src/main/java/com/loafle/commons/rpc/protocol/json/JSONServerResponse.java
+++ b/src/main/java/com/loafle/commons/rpc/protocol/json/JSONServerResponse.java
@@ -1,13 +1,14 @@
 package com.loafle.commons.rpc.protocol.json;
 
-import com.google.gson.annotations.SerializedName;
 import com.loafle.commons.rpc.protocol.RPCError;
 
+import org.codehaus.jackson.annotate.JsonProperty;
+
 /**
  * JSONServerResponse
  */
 class JSONServerResponse {
-  @SerializedName("jsonrpc")
+  @JsonProperty("jsonrpc")
   public String version;
 
   public Object result;