diff --git a/public/index.html b/public/index.html
index e54e784..bb1877c 100644
--- a/public/index.html
+++ b/public/index.html
@@ -342,13 +342,13 @@
     const MAP_STYLES = {
       dark: {
         name: 'Dark',
-        url: 'https://{s}.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}{r}.png',
-        attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OSM</a> &copy; <a href="https://carto.com/">CARTO</a>'
+        url: 'https://server.arcgisonline.com/ArcGIS/rest/services/Canvas/World_Dark_Gray_Base/MapServer/tile/{z}/{y}/{x}',
+        attribution: '&copy; Esri'
       },
       satellite: {
         name: 'Satellite',
-        url: 'https://mt1.google.com/vt/lyrs=s&x={x}&y={y}&z={z}',
-        attribution: '&copy; Google'
+        url: 'https://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer/tile/{z}/{y}/{x}',
+        attribution: '&copy; Esri'
       },
       terrain: {
         name: 'Terrain',
@@ -362,13 +362,13 @@
       },
       topo: {
         name: 'Topo',
-        url: 'https://{s}.basemaps.cartocdn.com/rastertiles/voyager/{z}/{x}/{y}{r}.png',
-        attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OSM</a> &copy; <a href="https://carto.com/">CARTO</a>'
+        url: 'https://server.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer/tile/{z}/{y}/{x}',
+        attribution: '&copy; Esri'
       },
       watercolor: {
-        name: 'Minimal',
-        url: 'https://{s}.basemaps.cartocdn.com/dark_nolabels/{z}/{x}/{y}{r}.png',
-        attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OSM</a> &copy; <a href="https://carto.com/">CARTO</a>'
+        name: 'Ocean',
+        url: 'https://server.arcgisonline.com/ArcGIS/rest/services/Ocean/World_Ocean_Base/MapServer/tile/{z}/{y}/{x}',
+        attribution: '&copy; Esri'
       },
       hybrid: {
         name: 'Hybrid',
@@ -377,8 +377,8 @@
       },
       gray: {
         name: 'Gray',
-        url: 'https://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}{r}.png',
-        attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OSM</a> &copy; <a href="https://carto.com/">CARTO</a>'
+        url: 'https://server.arcgisonline.com/ArcGIS/rest/services/Canvas/World_Light_Gray_Base/MapServer/tile/{z}/{y}/{x}',
+        attribution: '&copy; Esri'
       }
     };