diff --git a/examples/introduction.ipynb b/examples/introduction.ipynb
index aa456d9..0c0a0c6 100644
--- a/examples/introduction.ipynb
+++ b/examples/introduction.ipynb
@@ -9,7 +9,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 25,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -18,13 +18,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 26,
+   "execution_count": 2,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "47a42e9446f44146a853ebba1de8b8c8",
+       "model_id": "2f268e1adb234ab19da2eecccc7167c0",
        "version_major": 2,
        "version_minor": 0
       },
@@ -32,7 +32,7 @@
        "Map(center=[5.314329221346643, 16.3625002926901], zoom=9.0)"
       ]
      },
-     "execution_count": 26,
+     "execution_count": 2,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -44,7 +44,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 27,
+   "execution_count": 3,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -54,7 +54,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 21,
+   "execution_count": 4,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -64,26 +64,27 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 28,
+   "execution_count": 6,
    "metadata": {},
    "outputs": [],
    "source": [
-    "geo_tiff_layer = GeoTIFFTileLayer(\n",
-    "    sources=[\n",
-    "        {'url': 'https://sentinel-cogs.s3.us-west-2.amazonaws.com/sentinel-s2-l2a-cogs/36/Q/WD/2020/7/S2A_36QWD_20200701_0_L2A/TCI.tif'}\n",
-    "    ]\n",
-    ")\n",
+    "geo_tiff_layer = GeoTIFFTileLayer(url= 'https://sentinel-cogs.s3.us-west-2.amazonaws.com/sentinel-s2-l2a-cogs/36/Q/WD/2020/7/S2A_36QWD_20200701_0_L2A/TCI.tif')\n",
     "m.add_layer(geo_tiff_layer)"
    ]
   },
   {
-   "cell_type": "code",
-   "execution_count": 15,
+   "cell_type": "markdown",
    "metadata": {},
-   "outputs": [],
    "source": [
     "m.remove_layer(geo_tiff_layer)"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {
diff --git a/ipyopenlayers/Map.py b/ipyopenlayers/Map.py
index 06e5ad5..aaf5dcc 100644
--- a/ipyopenlayers/Map.py
+++ b/ipyopenlayers/Map.py
@@ -42,7 +42,7 @@ class GeoJSON(Layer):
 class GeoTIFFTileLayer(Layer):
    _model_name = Unicode('GeoTIFFTileLayerModel').tag(sync=True)
    _view_name = Unicode('GeoTIFFTileLayerView').tag(sync=True)
-   sources = List(Dict).tag(sync=True)
+   url = Unicode('').tag(sync=True)
 
 class HeatmapLayer(Layer):
     _view_name = Unicode('HeatmapLayerView').tag(sync=True)
@@ -52,8 +52,6 @@ class HeatmapLayer(Layer):
     radius = Int(8).tag(sync=True)
 
 
-
-
 class BaseOverlay(DOMWidget): 
    
    _model_module = Unicode(module_name).tag(sync=True)
diff --git a/src/geotifflayer.ts b/src/geotifflayer.ts
index 13aa7c4..efba31d 100644
--- a/src/geotifflayer.ts
+++ b/src/geotifflayer.ts
@@ -16,7 +16,7 @@ export class GeoTIFFTileLayerModel extends LayerModel {
       _view_name: GeoTIFFTileLayerModel.view_name,
       _view_module: GeoTIFFTileLayerModel.view_module,
       _view_module_version: GeoTIFFTileLayerModel.view_module_version,
-      source: [],
+      url: '',
     };
   }
 
@@ -37,33 +37,30 @@ export class GeoTIFFTileLayerView extends LayerView {
   render() {
     super.render();
     this.sourcesChanged();
-    this.model.on('change:sources', this.sourcesChanged, this);
+    this.model.on('change:url', this.sourcesChanged, this);
   }
 
   create_obj() {
-    const sources = this.model.get('sources').map((source: any) => ({
-      url: source.url,
-    }));
+    const url = this.model.get('url');
 
-    this.obj = this.tileLayer = new WebGLTileLayer({
-      source: new GeoTIFF({
-        sources: sources,
-      }),
-    });
+    if (url) {
+      this.obj = new WebGLTileLayer({
+        source: new GeoTIFF({
+          sources: [{ url: url }],
+        }),
+      });
+    }
   }
-
   sourcesChanged() {
-    const newSources = this.model.get('sources').map((source: any) => ({
-      url: source.url,
-    }));
+    const newUrl = this.model.get('url');
 
-    if (newSources) {
+    if (newUrl) {
       const newSource = new GeoTIFF({
-        sources: newSources,
+        sources: [{ url: newUrl }],
       });
-      this.tileLayer.setSource(newSource);
+      this.obj.setSource(newSource);
     }
   }
 
-  tileLayer: WebGLTileLayer;
+  obj: WebGLTileLayer;
 }
diff --git a/ui-tests/tests/ipyopenlayers.test.ts-snapshots/light-map-update-ipynb-cell-0-linux.png b/ui-tests/tests/ipyopenlayers.test.ts-snapshots/light-map-update-ipynb-cell-0-linux.png
index bffbc64..d9be678 100644
Binary files a/ui-tests/tests/ipyopenlayers.test.ts-snapshots/light-map-update-ipynb-cell-0-linux.png and b/ui-tests/tests/ipyopenlayers.test.ts-snapshots/light-map-update-ipynb-cell-0-linux.png differ
diff --git a/ui-tests/tests/ipyopenlayers.test.ts-snapshots/light-map-update-ipynb-cell-1-linux.png b/ui-tests/tests/ipyopenlayers.test.ts-snapshots/light-map-update-ipynb-cell-1-linux.png
index bffbc64..63be347 100644
Binary files a/ui-tests/tests/ipyopenlayers.test.ts-snapshots/light-map-update-ipynb-cell-1-linux.png and b/ui-tests/tests/ipyopenlayers.test.ts-snapshots/light-map-update-ipynb-cell-1-linux.png differ
diff --git a/ui-tests/tests/notebooks/map_update.ipynb b/ui-tests/tests/notebooks/map_update.ipynb
index a1e71d6..f2be4bd 100644
--- a/ui-tests/tests/notebooks/map_update.ipynb
+++ b/ui-tests/tests/notebooks/map_update.ipynb
@@ -12,8 +12,7 @@
    "outputs": [],
    "source": [
     "from ipyopenlayers import (\n",
-    "    Map, TileLayer, ImageOverlay, VideoOverlay, PopupOverlay,\n",
-    "    ZoomSlider, FullScreen, ScaleLine, MousePosition\n",
+    "    Map, RasterTileLayer\n",
     ")\n",
     "\n",
     "m = Map(center=[0.0, 0.0], zoom=2)\n",
@@ -31,7 +30,7 @@
    },
    "outputs": [],
    "source": [
-    "layer = TileLayer()\n",
+    "layer = RasterTileLayer()\n",
     "m.add_layer(layer)"
    ]
   }