diff --git a/README.md b/README.md
index 4504f2a..80a63d3 100644
--- a/README.md
+++ b/README.md
@@ -311,8 +311,8 @@ All notable changes to this project are documented in the [releases](https://git
 
 **Compatibile with:**
 [![Leaflet 1.x compatible!](https://img.shields.io/badge/Leaflet-1.7.0-1EB300.svg?style=flat)](http://leafletjs.com/reference.html)
-[![d3.js v6 compatibile!](https://img.shields.io/badge/d3.js-6.5-1EB300.svg?style=flat)](https://www.npmjs.com/package/d3)
-[![@tmcw/togeojson v4.6.0 compatibile!](https://img.shields.io/badge/@tmcw/togeojson-4.6-1EB300.svg?style=flat)](https://www.npmjs.com/package/@tmcw/togeojson)
+[![d3.js v7 compatibile!](https://img.shields.io/badge/d3.js-7.8-1EB300.svg?style=flat)](https://www.npmjs.com/package/d3)
+[![@tmcw/togeojson v5 compatibile!](https://img.shields.io/badge/@tmcw/togeojson-5.6-1EB300.svg?style=flat)](https://www.npmjs.com/package/@tmcw/togeojson)
 
 
 ---
diff --git a/examples/leaflet-elevation_almost-over.spec.js b/examples/leaflet-elevation_almost-over.spec.js
index 1e68b6a..5d6b1a8 100644
--- a/examples/leaflet-elevation_almost-over.spec.js
+++ b/examples/leaflet-elevation_almost-over.spec.js
@@ -71,6 +71,17 @@ test('almostOver', async ({ page }) => {
     assert.equal(step_2.over_layers, 1);
     assert.equal(step_3.over_layers, 9);
 
+    /**
+     * List of points where altitude == 0
+     * 
+     * <ele>0</ele> values shouldn't be interpreted as an empty ("false" or "undefined") value.
+     * 
+     * @see https://github.com/Raruto/leaflet-elevation/issues/259
+     */
+    [1029, 1030, 2048, 3747, 3843, 3845, 3891, 3965, 3966, 4057, 4058, 4072, 4262, 4263, 4264, 4269, 11284].forEach(idx => {
+      assert.is(step_2.data[idx].z, 0);
+    });
+
 }, 15000);
 
 test.run();
@@ -90,6 +101,7 @@ async function load_trace(page, trace_url) {
             option: ctrl.options.almostOver,
             over_layers: map.almostOver._layers.length,
             map_layers: Object.keys(map._layers).length,
+            data: ctrl._data,
           }));
       });
       ctrl.load(trace_url);
diff --git a/examples/leaflet-elevation_hoverable-tracks.html b/examples/leaflet-elevation_hoverable-tracks.html
index d7685b5..01a6261 100644
--- a/examples/leaflet-elevation_hoverable-tracks.html
+++ b/examples/leaflet-elevation_hoverable-tracks.html
@@ -53,8 +53,8 @@
 				searchControl: false,
 				loadingControl: false,
 				plugins: [
-					"d3@6.5.0/dist/d3.min.js",
-					"@tmcw/togeojson@4.5.0/dist/togeojson.umd.js",
+					"d3@7.8.4/dist/d3.min.js",
+					"@tmcw/togeojson@5.6.2/dist/togeojson.umd.js",
 					"leaflet-geometryutil@0.9.3/src/leaflet.geometryutil.js",
 					"leaflet-almostover@1.0.1/src/leaflet.almostover.js",
 					"@raruto/leaflet-elevation@2.4.0/libs/leaflet-distance-marker.css",
diff --git a/examples/leaflet-elevation_toggable-charts.html b/examples/leaflet-elevation_toggable-charts.html
index 177bda3..d191f1d 100644
--- a/examples/leaflet-elevation_toggable-charts.html
+++ b/examples/leaflet-elevation_toggable-charts.html
@@ -38,8 +38,8 @@
 				searchControl: false,
 				loadingControl: false,
 				plugins: [
-					"d3@6.5.0/dist/d3.min.js",
-					"@tmcw/togeojson@4.5.0/dist/togeojson.umd.js",
+					"d3@7.8.4/dist/d3.min.js",
+					"@tmcw/togeojson@5.6.2/dist/togeojson.umd.js",
 					"leaflet-geometryutil@0.9.3/src/leaflet.geometryutil.js",
 					"leaflet-almostover@1.0.1/src/leaflet.almostover.js",
 					"@raruto/leaflet-elevation@2.4.0/libs/leaflet-distance-marker.css",
diff --git a/examples/leaflet-elevation_upload-gpx.html b/examples/leaflet-elevation_upload-gpx.html
index e0e7305..a3cf1be 100644
--- a/examples/leaflet-elevation_upload-gpx.html
+++ b/examples/leaflet-elevation_upload-gpx.html
@@ -21,7 +21,7 @@
 	<script src="https://unpkg.com/@raruto/leaflet-elevation@2.4.0/dist/leaflet-elevation.min.js"></script>
 
 	<!-- leaflet-filelayer -->
-	<script src="https://unpkg.com/@tmcw/togeojson@4.5.0/dist/togeojson.umd.js"></script>
+	<script src="https://unpkg.com/@tmcw/togeojson@5.6.2/dist/togeojson.umd.js"></script>
 	<script src="https://unpkg.com/leaflet-filelayer@1.2.0/src/leaflet.filelayer.js"></script>
 
 	<style>
diff --git a/package-lock.json b/package-lock.json
index cb1d412..1d0aa88 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -25,7 +25,7 @@
         "uvu": "^0.5.6"
       },
       "peerDependencies": {
-        "@tmcw/togeojson": "5.6.0",
+        "@tmcw/togeojson": "5.6.2",
         "d3": "7.8.4",
         "leaflet": "^1.7.0",
         "leaflet-i18n": "^0.3.1"
@@ -229,9 +229,9 @@
       "dev": true
     },
     "node_modules/@tmcw/togeojson": {
-      "version": "5.6.0",
-      "resolved": "https://registry.npmjs.org/@tmcw/togeojson/-/togeojson-5.6.0.tgz",
-      "integrity": "sha512-p+c0kbSY/tIwd3C0rpmTf3iFAOUYV6bkJbDiq0oQDGROOc7c6uh/X8r/mijY6SIFYIkVuKc8MS2REKhur2e6Jw==",
+      "version": "5.6.2",
+      "resolved": "https://registry.npmjs.org/@tmcw/togeojson/-/togeojson-5.6.2.tgz",
+      "integrity": "sha512-Tj0apuZI24WxF5rVTWsrQG2rmBQhl1TYeLvrTVRpU9G+1Ey2s32Luy3/DBQzULjJtVRD4sW3TjRldNc9a93ohA==",
       "peer": true,
       "peerDependencies": {
         "@types/geojson": "*"
@@ -2110,20 +2110,6 @@
       "integrity": "sha512-OO0pH2lK6a0hZnAdau5ItzHPI6pUlvI7jMVnxUQRtw4owF2wk8lOSabtGDCTP4Ggrg2MbGnWO9X8K1t4+fGMDw==",
       "dev": true
     },
-    "node_modules/fsevents": {
-      "version": "2.3.2",
-      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
-      "integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
-      "dev": true,
-      "hasInstallScript": true,
-      "optional": true,
-      "os": [
-        "darwin"
-      ],
-      "engines": {
-        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
-      }
-    },
     "node_modules/function-bind": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.1.tgz",
@@ -6162,9 +6148,9 @@
       }
     },
     "@tmcw/togeojson": {
-      "version": "5.6.0",
-      "resolved": "https://registry.npmjs.org/@tmcw/togeojson/-/togeojson-5.6.0.tgz",
-      "integrity": "sha512-p+c0kbSY/tIwd3C0rpmTf3iFAOUYV6bkJbDiq0oQDGROOc7c6uh/X8r/mijY6SIFYIkVuKc8MS2REKhur2e6Jw==",
+      "version": "5.6.2",
+      "resolved": "https://registry.npmjs.org/@tmcw/togeojson/-/togeojson-5.6.2.tgz",
+      "integrity": "sha512-Tj0apuZI24WxF5rVTWsrQG2rmBQhl1TYeLvrTVRpU9G+1Ey2s32Luy3/DBQzULjJtVRD4sW3TjRldNc9a93ohA==",
       "peer": true,
       "requires": {}
     },
@@ -7584,13 +7570,6 @@
       "integrity": "sha512-OO0pH2lK6a0hZnAdau5ItzHPI6pUlvI7jMVnxUQRtw4owF2wk8lOSabtGDCTP4Ggrg2MbGnWO9X8K1t4+fGMDw==",
       "dev": true
     },
-    "fsevents": {
-      "version": "2.3.2",
-      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
-      "integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
-      "dev": true,
-      "optional": true
-    },
     "function-bind": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.1.tgz",
diff --git a/package.json b/package.json
index bfa491b..5e7ab85 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
     "uvu": "^0.5.6"
   },
   "peerDependencies": {
-    "@tmcw/togeojson": "5.6.0",
+    "@tmcw/togeojson": "5.6.2",
     "d3": "7.8.4",
     "leaflet": "^1.7.0",
     "leaflet-i18n": "^0.3.1"
diff --git a/src/control.js b/src/control.js
index 636c809..6388aaf 100644
--- a/src/control.js
+++ b/src/control.js
@@ -14,7 +14,7 @@ export const Elevation = L.Control.Elevation = L.Control.extend({
 	__mileFactor:     0.621371, // 1 km = (0.621371 mi)
 	__footFactor:     3.28084,  // 1 m  = (3.28084 ft)
 	__D3:            'https://unpkg.com/d3@7.8.4/dist/d3.min.js',
-	__TOGEOJSON:     'https://unpkg.com/@tmcw/togeojson@5.6.0/dist/togeojson.umd.js',
+	__TOGEOJSON:     'https://unpkg.com/@tmcw/togeojson@5.6.2/dist/togeojson.umd.js',
 	__LGEOMUTIL:     'https://unpkg.com/leaflet-geometryutil@0.10.1/src/leaflet.geometryutil.js',
 	__LALMOSTOVER:   'https://unpkg.com/leaflet-almostover@1.0.1/src/leaflet.almostover.js',
 	__LHOTLINE:      '../libs/leaflet-hotline.min.js',
diff --git a/test/setup/http_server.js b/test/setup/http_server.js
index 92a0f1d..1b04d63 100644
--- a/test/setup/http_server.js
+++ b/test/setup/http_server.js
@@ -2,16 +2,31 @@ import { suite as uvu_suite } from 'uvu';
 import { exec } from 'child_process';
 import { chromium } from 'playwright';
 
+process.on('exit', async () => {
+    await globalThis.server.kill('SIGTERM');
+})
+
 /**
  * Start HTTP server 
  */
 export async function setup(ctx) {
-    ctx.server = new AbortController();
-    exec('http-server', { signal: ctx.server.signal });
+    if (!globalThis.server) {
+        await new Promise((resolve) => {
+            globalThis.server = exec('http-server');
+            globalThis.server.stdout.on('data', (msg) => {
+                // console.log(msg);
+                // if (msg.toString().match(/Starting up/)) {
+                if (msg.toString().indexOf('Hit CTRL-C to stop the server')) {
+                    resolve();
+                    // setTimeout(resolve, 1500);
+                }
+            });
+        });
+    }
     ctx.localhost = 'http://localhost:8080';
     ctx.browser = await chromium.launch();
     ctx.context = await ctx.browser.newContext();
-    ctx.context.route(/.html$/, mock_cdn_urls);
+    ctx.context.route(/.html$/, await mock_cdn_urls);
     ctx.page = await ctx.context.newPage();
 }
 
@@ -21,7 +36,6 @@ export async function setup(ctx) {
 export async function reset(ctx) {
     await ctx.context.close();
     await ctx.browser.close();
-    try { ctx.server.abort(); } catch(e) { }
 }
 
 /**
@@ -47,8 +61,11 @@ export function suite() {
     test.before(setup);
     test.after(reset);
     test.before.each(async ({ localhost, page }) => {
-        page.on('console', msg => console.log(msg.text()))
+        page.on('console', msg => console.log(msg.text()));
+        page.on('requestfailed', request => { console.log(request.failure().errorText, request.url()); });
+        page.on('pageerror', exception => { console.log(exception); });
         await page.goto((new URL(arguments[0], localhost)).toString());
+        await page.waitForLoadState('domcontentloaded');
     });
     // augment uvu `test` function with a third parameter `timeout`
     return new Proxy(test, {
@@ -63,13 +80,13 @@ export function suite() {
  * 
  * @see https://github.com/lukeed/uvu/issues/33#issuecomment-879870292 
  */
-function timeout(handler, ms=10000) {
+function timeout(handler, ms = 10000) {
     return (ctx) => {
-      let timer
-      return Promise.race([
-        handler(ctx),
-        new Promise((_, reject) => { timer = setTimeout(() => reject(new Error('[TIMEOUT] Maximum execution time exceeded: ' + ms + 'ms')), ms) })
-      ]).finally(() => { clearTimeout(timer) })
+        let timer
+        return Promise.race([
+            handler(ctx),
+            new Promise((_, reject) => { timer = setTimeout(() => reject(new Error('[TIMEOUT] Maximum execution time exceeded: ' + ms + 'ms')), ms) })
+        ]).finally(() => { clearTimeout(timer) })
     }
 }