diff --git a/pom.xml b/pom.xml
index f699a9f..0a59a0e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,8 +20,9 @@
         </license>
     </licenses>
     <properties>
-        <maven.compiler.source>8</maven.compiler.source>
-        <maven.compiler.target>8</maven.compiler.target>
+        <java.version>21</java.version>
+        <maven.compiler.source>${java.version}</maven.compiler.source>
+        <maven.compiler.target>${java.version}</maven.compiler.target>
     </properties>
 
     <organization>
@@ -53,39 +54,39 @@
         <dependency>
             <groupId>org.bouncycastle</groupId>
             <artifactId>bcpkix-jdk15on</artifactId>
-            <version>1.50</version>
+            <version>1.70</version>
         </dependency>
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.9</version>
+            <version>2.11.0</version>
         </dependency>
         <dependency>
             <groupId>org.json</groupId>
             <artifactId>json</artifactId>
-            <version>20230227</version>
+            <version>20240303</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.2</version>
             <scope>test</scope>
         </dependency>
       
         <dependency>
             <groupId>com.squareup.okhttp3</groupId>
             <artifactId>okhttp</artifactId>
-            <version>3.6.0</version>
+            <version>4.12.0</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.9.9</version>
+            <version>2.18.0</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.data</groupId>
             <artifactId>spring-data-commons</artifactId>
-            <version>2.7.2</version>
+            <version>3.3.4</version>
         </dependency>
     </dependencies>
 
@@ -130,8 +131,8 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
-                    <source>8</source>
-                    <target>8</target>
+                    <source>${maven.compiler.source}</source>
+                    <target>${maven.compiler.target}</target>
                 </configuration>
             </plugin>
 
diff --git a/src/main/java/com/culqi/apioperation/ResponseHelper.java b/src/main/java/com/culqi/apioperation/ResponseHelper.java
index 16f4b9a..6f1a7d1 100644
--- a/src/main/java/com/culqi/apioperation/ResponseHelper.java
+++ b/src/main/java/com/culqi/apioperation/ResponseHelper.java
@@ -91,7 +91,7 @@ public ResponseCulqi list(String url, String params) {
             }
             String base_url = url.contains("tokens") ? config.API_SECURE : config.API_BASE;
             url = (url.contains("plans") || url.contains("subscriptions")) ? url + "create" : url;
-            RequestBody body = RequestBody.create(JSON, jsonData);
+            RequestBody body = RequestBody.create(jsonData, JSON);
             Request request = new Request.Builder()
                     .url(base_url+url)
                     .header("Authorization","Bearer " + api_key)
@@ -119,7 +119,7 @@ public ResponseCulqi create(String url, String jsonData, Map<String, String> cus
             }
             String base_url = url.contains("tokens") ? config.API_SECURE : config.API_BASE;
             url = (url.contains("plans") || url.contains("subscriptions")) ? url + "create" : url;
-            RequestBody body = RequestBody.create(JSON, jsonData);
+            RequestBody body = RequestBody.create(jsonData, JSON);
             Request.Builder builder = new Request.Builder()
                     .url(base_url+url)
                     .header("Authorization","Bearer " + api_key)
@@ -148,7 +148,7 @@ public ResponseCulqi create(String url, String jsonData, String rsaId) {
             }
             String base_url = url.contains("tokens") ? config.API_SECURE : config.API_BASE;
             url = (url.contains("plans") || url.contains("subscriptions")) ? url + "create" : url;
-            RequestBody body = RequestBody.create(JSON, jsonData);
+            RequestBody body = RequestBody.create(jsonData, JSON);
             Request request = new Request.Builder()
                     .url(base_url+url)
                     .header("Authorization","Bearer " + api_key)
@@ -177,7 +177,7 @@ public ResponseCulqi create(String url, String jsonData, String rsaId, Map<Strin
             }
             String base_url = url.contains("tokens") ? config.API_SECURE : config.API_BASE;
             url = (url.contains("plans") || url.contains("subscriptions")) ? url + "create" : url;
-            RequestBody body = RequestBody.create(JSON, jsonData);
+            RequestBody body = RequestBody.create(jsonData, JSON);
             Request.Builder builder = new Request.Builder()
                     .url(base_url+url)
                     .header("Authorization","Bearer " + api_key)
@@ -205,7 +205,7 @@ public ResponseCulqi update(String url, String jsonData, String id) {
                 env = Config.X_CULQI_ENV_LIVE;
             }
             System.out.println(config.API_BASE+url+id);
-            RequestBody body = RequestBody.create(JSON, jsonData);
+            RequestBody body = RequestBody.create(jsonData, JSON);
             Request request = new Request.Builder()
                     .url(config.API_BASE+url+id)
                     .header("Authorization","Bearer " + Culqi.secret_key)
@@ -230,7 +230,7 @@ public ResponseCulqi update(String url, String jsonData, String id,  String rsaI
             if(Culqi.secret_key.contains("live")) {
                 env = Config.X_CULQI_ENV_LIVE;
             }
-            RequestBody body = RequestBody.create(JSON, jsonData);
+            RequestBody body = RequestBody.create(jsonData, JSON);
             Request request = new Request.Builder()
                     .url(config.API_BASE+url+id)
                     .header("Authorization","Bearer " + Culqi.secret_key)
@@ -283,7 +283,7 @@ public ResponseCulqi capture(String url, String id) throws Exception {
             if(Culqi.secret_key.contains("live")) {
                 env = Config.X_CULQI_ENV_LIVE;
             }
-            RequestBody body = RequestBody.create(JSON, "");
+            RequestBody body = RequestBody.create("", JSON);
             Request.Builder builder = new Request.Builder();
             builder.url(config.API_BASE + url + id + "/capture/");
             builder.header("Authorization", "Bearer " + Culqi.secret_key)
@@ -307,7 +307,7 @@ public ResponseCulqi capture(String url, String id, String jsonData, String rsaI
             if(Culqi.secret_key.contains("live")) {
                 env = Config.X_CULQI_ENV_LIVE;
             }
-            RequestBody body = RequestBody.create(JSON, jsonData);
+            RequestBody body = RequestBody.create(jsonData, JSON);
             Request.Builder builder = new Request.Builder();
             builder.url(config.API_BASE + url + id + "/capture/");
             builder.header("Authorization", "Bearer " + Culqi.secret_key)
@@ -333,7 +333,7 @@ public ResponseCulqi confirm(String url, String id) throws Exception {
             if(Culqi.public_key.contains("live")) {
                 env = Config.X_CULQI_ENV_LIVE;
             }
-            RequestBody body = RequestBody.create(JSON, "");
+            RequestBody body = RequestBody.create("", JSON);
             Request.Builder builder = new Request.Builder();
             builder.url(config.API_BASE+url+id+"/confirm/");
             builder.header("Authorization","Bearer " + Culqi.public_key)
@@ -359,25 +359,6 @@ private Request.Builder addCustomHeadersToRequest(Map<String, String> customHead
         return builder;
     }
 
-    private String generateCurlCommand(Request request, String jsonData) {
-        StringBuilder curlCmd = new StringBuilder("curl -X ").append(request.method().toUpperCase() + " ");
-
-        // Añadimos la URL
-        curlCmd.append("\"").append(request.url().toString()).append("\" ");
-
-        // Añadimos los headers
-        for (String headerName : request.headers().names()) {
-            String headerValue = request.header(headerName);
-            curlCmd.append("-H \"").append(headerName).append(": ").append(headerValue).append("\" ");
-        }
-
-        // Añadimos el body (si es necesario)
-        if (jsonData != null && !jsonData.isEmpty()) {
-            curlCmd.append("-d '").append(jsonData).append("' ");
-        }
-
-        return curlCmd.toString();
-    }
 
     private String exceptionError() {
         String result = "";
diff --git a/src/main/java/com/culqi/apioperation/service/Generic.java b/src/main/java/com/culqi/apioperation/service/Generic.java
index 7e5f875..15168b5 100644
--- a/src/main/java/com/culqi/apioperation/service/Generic.java
+++ b/src/main/java/com/culqi/apioperation/service/Generic.java
@@ -1,6 +1,5 @@
 package com.culqi.apioperation.service;
 
-import java.io.IOException;
 import java.util.Map;
 
 import com.culqi.apioperation.All;