diff --git a/fetchupd.php b/fetchupd.php
index 02b24ea..4b1d5ba 100644
--- a/fetchupd.php
+++ b/fetchupd.php
@@ -19,7 +19,7 @@ require_once dirname(__FILE__).'/shared/main.php';
 require_once dirname(__FILE__).'/shared/requests.php';
 require_once dirname(__FILE__).'/listid.php';
 
-function uupFetchUpd($arch = 'amd64', $ring = 'WIF', $flight = 'Active', $build = '16251', $minor = '0', $sku = '48') {
+function uupFetchUpd($arch = 'amd64', $ring = 'WIF', $flight = 'Active', $build = 'latest', $minor = '0', $sku = '48') {
     uupApiPrintBrand();
 
     $arch = strtolower($arch);
@@ -27,6 +27,26 @@ function uupFetchUpd($arch = 'amd64', $ring = 'WIF', $flight = 'Active', $build
     $flight = ucwords(strtolower($flight));
     if($flight == 'Current') $flight = 'Active';
 
+    if($build == 'latest' || (!$build)) {
+        $builds = array('17134.1');
+
+        $ids = uupListIds();
+        if(isset($ids['error'])) {
+            $ids['builds'] = array();
+        }
+
+        $ids = $ids['builds'];
+        foreach($ids as $val) {
+            $builds[] = $val['build'];
+        }
+
+        $builds = array_unique($builds);
+        rsort($builds);
+
+        $build = $builds[0];
+        unset($builds, $ids);
+    }
+
     $build = explode('.', $build);
     if(isset($build[1])) $minor = intval($build[1]);
     $build = intval($build[0]);
diff --git a/shared/main.php b/shared/main.php
index 3197726..7af2521 100644
--- a/shared/main.php
+++ b/shared/main.php
@@ -16,7 +16,7 @@ limitations under the License.
 */
 
 function uupApiVersion() {
-    return '1.14.4';
+    return '1.15.0';
 }
 
 function uupApiPrintBrand() {