diff --git a/src/config/styles.json b/src/config/styles.json
index 4137da2..1359feb 100644
--- a/src/config/styles.json
+++ b/src/config/styles.json
@@ -3,25 +3,25 @@
     "id": "klokantech-basic",
     "title": "Klokantech Basic",
     "url": "https://rawgit.com/openmaptiles/klokantech-basic-gl-style/master/style.json",
-    "thumbnail": "http://maputnik.com/thumbnails/klokantech-basic.png"
+    "thumbnail": "https://maputnik.github.io/thumbnails/klokantech-basic.png"
   },
   {
     "id": "dark-matter",
     "title": "Dark Matter",
     "url": "https://rawgit.com/openmaptiles/dark-matter-gl-style/master/style.json",
-    "thumbnail": "http://maputnik.com/thumbnails/dark-matter.png"
+    "thumbnail": "https://maputnik.github.io/thumbnails/dark-matter.png"
   },
   {
     "id": "positron",
     "title": "Positron",
     "url": "https://rawgit.com/openmaptiles/positron-gl-style/master/style.json",
-    "thumbnail": "http://maputnik.com/thumbnails/positron.png"
+    "thumbnail": "https://maputnik.github.io/thumbnails/positron.png"
   },
   {
     "id": "osm-bright",
     "title": "OSM Bright",
     "url": "https://rawgit.com/openmaptiles/osm-bright-gl-style/master/style.json",
-    "thumbnail": "http://maputnik.com/thumbnails/osm-bright.png"
+    "thumbnail": "https://maputnik.github.io/thumbnails/osm-bright.png"
   },
   {
     "id": "osm-liberty",
@@ -39,24 +39,18 @@
     "id": "mapbox-satellite",
     "title": "Mapbox Satellite",
     "url": "https://rawgit.com/mapbox/mapbox-gl-styles/master/styles/satellite-v9.json",
-    "thumbnail": "http://maputnik.com/thumbnails/mapbox-satellite.png"
+    "thumbnail": "https://maputnik.github.io/thumbnails/mapbox-satellite.png"
   },
   {
     "id": "mapbox-bright",
     "title": "Mapbox Bright",
     "url": "https://rawgit.com/mapbox/mapbox-gl-styles/master/styles/bright-v9.json",
-    "thumbnail": "http://maputnik.com/thumbnails/mapbox-bright.png"
+    "thumbnail": "https://maputnik.github.io/thumbnails/mapbox-bright.png"
   },
   {
     "id": "mapbox-basic",
     "title": "Mapbox Basic",
     "url": "https://rawgit.com/mapbox/mapbox-gl-styles/master/styles/basic-v9.json",
-    "thumbnail": "http://maputnik.com/thumbnails/mapbox-basic.png"
-  },
-  {
-    "id": "tilezen",
-    "title": "Tilezen",
-    "url": "https://rawgit.com/lukasmartinelli/tilezen-gl-style/master/style.json",
-    "thumbnail": "http://maputnik.com/thumbnails/tilezen.png"
+    "thumbnail": "https://maputnik.github.io/thumbnails/mapbox-basic.png"
   }
 ]
diff --git a/src/config/tilesets.json b/src/config/tilesets.json
index bfc545f..ee321ce 100644
--- a/src/config/tilesets.json
+++ b/src/config/tilesets.json
@@ -8,14 +8,5 @@
     "type": "vector",
     "url": "https://free.tilehosting.com/data/v3.json?key={key}",
     "title": "OpenMapTiles"
-  },
-  "tilezen": {
-    "type": "vector",
-    "tiles": [
-      "http://tile.mapzen.com/mapzen/vector/v1/{layers}/{z}/{x}/{y}.pbf?api_key=mapzen-RVcyVL7"
-    ],
-    "minZoom": 0,
-    "maxZoom": 15,
-    "title": "Mapzen Vector Tile Service"
   }
 }