diff --git a/library/build.gradle b/library/build.gradle
index 7a819061..8ba4a691 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -5,7 +5,7 @@ apply plugin: "maven-publish"
 
 ext
 {
-  appCompatVersion="27.0.1"
+  appCompatVersion="27.0.2"
 }
 
 android
@@ -17,8 +17,8 @@ android
     minSdkVersion 14
     targetSdkVersion 27
 
-    versionCode 21
-    versionName "2.6.1"
+    versionCode 22
+    versionName "2.7.0"
   }
 
   buildTypes
@@ -128,9 +128,6 @@ publishing.publications.all
 
 bintray
 {
-  user = bintrayUsername
-  key = bintrayKey
-
   publications = ["ReleasePublication"]
 
   pkg
diff --git a/library/src/main/java/com/smartnsoft/droid4me/ws/URLConnectionWebServiceCaller.java b/library/src/main/java/com/smartnsoft/droid4me/ws/URLConnectionWebServiceCaller.java
index e8471e41..bc6b07b9 100644
--- a/library/src/main/java/com/smartnsoft/droid4me/ws/URLConnectionWebServiceCaller.java
+++ b/library/src/main/java/com/smartnsoft/droid4me/ws/URLConnectionWebServiceCaller.java
@@ -197,6 +197,7 @@ protected int getConnectTimeout()
    * @param callType          the type of the HTTP method
    * @param postParameters    the body (as form-data fields) of the HTTP method when its a {@link CallType#Post} or a {@link CallType#Put} ; {@code null}
    *                          otherwise
+   * @param headers           the original headers of the request. They can be edited in order to manage some scenarios with tokens
    * @param body              the body (as form-data fields) of the HTTP method when its a {@link CallType#Post} or a {@link CallType#Put} ; {@code null}
    *                          otherwise
    * @param httpURLConnection the HttpURLConnection object
@@ -206,7 +207,8 @@ protected int getConnectTimeout()
    * @return {@code true} if you want the request to be re-run if it has failed
    * @throws CallException if you want the call to be considered as not OK
    */
-  protected boolean onStatusCodeNotOk(String uri, CallType callType, Map<String, String> postParameters, String body,
+  protected boolean onStatusCodeNotOk(String uri, CallType callType, Map<String, String> postParameters,
+      Map<String, String> headers, String body,
       HttpURLConnection httpURLConnection, URL url, int statusCode, String statusMessage, int attemptsCount)
       throws CallException
   {
@@ -472,7 +474,8 @@ protected HttpURLConnection performHttpRequest(String uri, CallType callType, Ma
     return performHttpRequest(uri, callType, headers, parameters, body, files, 0);
   }
 
-  protected boolean shouldTryToConsumeErrorInputstream(int statusCode, String uri, CallType callType, Map<String, String> headers,
+  protected boolean shouldTryToConsumeErrorInputstream(int statusCode, String uri, CallType callType,
+      Map<String, String> headers,
       Map<String, String> parameters, String body, List<MultipartFile> files)
   {
     return false;
@@ -733,7 +736,7 @@ else if (paramaters != null && paramaters.size() > 0)
 
     if (!(responseCode >= HttpURLConnection.HTTP_OK && responseCode < HttpURLConnection.HTTP_MULT_CHOICE))
     {
-      if (onStatusCodeNotOk(uri, callType, paramaters, body, httpURLConnection, url, responseCode, responseMessage,
+      if (onStatusCodeNotOk(uri, callType, paramaters, headers, body, httpURLConnection, url, responseCode, responseMessage,
           attemptsCount + 1) == true)
       {
         return performHttpRequest(uri, callType, headers, paramaters, body, files, attemptsCount + 1);
diff --git a/sample/build.gradle b/sample/build.gradle
index e7628eef..ad4526f6 100644
--- a/sample/build.gradle
+++ b/sample/build.gradle
@@ -2,15 +2,14 @@ apply plugin: 'com.android.application'
 
 android
 {
-  compileSdkVersion 26
-  buildToolsVersion "26.0.2"
+  compileSdkVersion 27
 
   defaultConfig
   {
     applicationId "com.smartnsoft.sample"
 
     minSdkVersion 16
-    targetSdkVersion 26
+    targetSdkVersion 27
 
     versionCode 1
     versionName "1.0"
@@ -29,6 +28,6 @@ android
 
 dependencies
 {
-  implementation ("com.android.support:appcompat-v7:27.0.1")
+  implementation ("com.android.support:appcompat-v7:27.0.2")
   implementation (project(":library"))
 }