diff --git a/index.html b/index.html
index b5428e7..9ef4401 100644
--- a/index.html
+++ b/index.html
@@ -22,7 +22,7 @@
 
         <!-- Main tangram library -->
         <!-- production -->
-        <script src="https://mapzen.com/tangram/0.14/tangram.min.js"></script>
+        <script src="https://www.nextzen.org/tangram/0.14/tangram.min.js"></script>
         <!-- production debug -->
         <!-- <script src="https://mapzen.com/tangram/0.14/tangram.debug.js"></script> -->
         <!-- dev -->
@@ -225,13 +225,13 @@
 
         var dev_or_prod = 'prod';
         // prod
-        var mapzen_api_key = 'vector-tiles-h6AbVZA';
+        var sdk_api_key = '8HNQZsjzTJyNhnoyr_7yrQ';
 
         if( dev_or_prod == 'dev' ) {
-            mapzen_api_key = 'mapzen-iP15tWp';
+            sdk_api_key = '8HNQZsjzTJyNhnoyr_7yrQ';
         }
 
-        var tg_global = { sdk_mapzen_api_key: mapzen_api_key };
+        var tg_global = { sdk_api_key: sdk_api_key };
 
         var layer = Tangram.leafletLayer({
             // more: 'mapzen-n22UFkv'
diff --git a/tron-style.yaml b/tron-style.yaml
index e81b3bf..038f547 100644
--- a/tron-style.yaml
+++ b/tron-style.yaml
@@ -37,18 +37,18 @@ import:
 sources:
     mapzen:
         type: MVT
-        url: https://tile.mapzen.com/mapzen/vector/v1/512/all/{z}/{x}/{y}.mvt
+        url: https://tile.nextzen.org/tilezen/vector/v1/256/all/{z}/{x}/{y}.mvt
         url_params:
-            api_key: global.sdk_mapzen_api_key
+            api_key: global.sdk_api_key
         rasters: [normals-elevation]
-        tile_size: 512
+        tile_size: 256
         max_zoom: 16
     normals-elevation:
         type: Raster
-        url: https://tile.mapzen.com/mapzen/terrain/v1/512/normal/{z}/{x}/{y}.png
+        url: https://tile.nextzen.org/tilezen/terrain/v1/256/normal/{z}/{x}/{y}.png
         url_params:
-            api_key: global.sdk_mapzen_api_key
-        tile_size: 512
+            api_key: global.sdk_api_key
+        tile_size: 256
         max_zoom: 14
 
     # Only enable this for local debug, should not be enabled for prod (app inserts these at runtime)