diff --git a/README.md b/README.md
index 38af948e..f8a6237b 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ already.
 <dependency>
     <groupId>com.mercadopago</groupId>
     <artifactId>sdk-java</artifactId>
-    <version>2.1.23</version>
+    <version>2.1.24</version>
 </dependency>
   ```
 
diff --git a/pom.xml b/pom.xml
index 478eab59..c27cf1f5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
     <groupId>com.mercadopago</groupId>
     <artifactId>sdk-java</artifactId>
-    <version>2.1.23</version>
+    <version>2.1.24</version>
     <packaging>jar</packaging>
 
     <name>Mercadopago SDK</name>
diff --git a/src/main/java/com/mercadopago/MercadoPagoConfig.java b/src/main/java/com/mercadopago/MercadoPagoConfig.java
index 7644d413..9dcde678 100644
--- a/src/main/java/com/mercadopago/MercadoPagoConfig.java
+++ b/src/main/java/com/mercadopago/MercadoPagoConfig.java
@@ -15,7 +15,7 @@
 /** Mercado Pago configuration class. */
 public class MercadoPagoConfig {
 
-  public static final String CURRENT_VERSION = "2.1.23";
+  public static final String CURRENT_VERSION = "2.1.24";
 
   public static final String PRODUCT_ID = "BC32A7VTRPP001U8NHJ0";
 
diff --git a/src/main/java/com/mercadopago/client/MercadoPagoClient.java b/src/main/java/com/mercadopago/client/MercadoPagoClient.java
index 1f8d5b44..855cc1e0 100644
--- a/src/main/java/com/mercadopago/client/MercadoPagoClient.java
+++ b/src/main/java/com/mercadopago/client/MercadoPagoClient.java
@@ -284,12 +284,17 @@ private Map<String, String> addDefaultHeaders(MPRequest request) {
       headers.put(Headers.IDEMPOTENCY_KEY, request.createIdempotencyKey());
     }
 
-    if (request!= null && !request.getUri().contains(OAUTH_TOKEN) && request.getAccessToken() != null) {
-      headers.put(Headers.AUTHORIZATION, String.format(BEARER, request.getAccessToken()));
+    if (nonNull(request) && !request.getUri().contains(OAUTH_TOKEN) && !headers.containsKey(Headers.AUTHORIZATION)) {
+      headers.put(Headers.AUTHORIZATION, String.format(BEARER, chooseAccessToken(request)));
     }
+
     return headers;
   }
 
+  private String chooseAccessToken(MPRequest request) {
+    return request.getAccessToken() != null ? request.getAccessToken() : MercadoPagoConfig.getAccessToken();
+  }
+
   private Map<String, String> addCustomHeaders(String uri, MPRequestOptions requestOptions) {
     Map<String, String> headers = new HashMap<>();
     if (nonNull(requestOptions) && nonNull(requestOptions.getCustomHeaders())) {