diff --git a/index.html b/index.html
index c869885..3be97ef 100644
--- a/index.html
+++ b/index.html
@@ -4,9 +4,9 @@
     <meta charset="utf-8" />
     <title>Map with indoor=</title>
     <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
-    <script src="https://cdn.jsdelivr.net/npm/ol@v9.1.0/dist/ol.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/ol@v10.0.0/dist/ol.js"></script>
     <script src="./dist/openlayers-indoorequal.umd.min.js"></script>
-    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/ol@9.1.0/ol.css">
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/ol@10.0.0/ol.css">
     <link href="./openlayers-indoorequal.css" rel="stylesheet" />
     <style>
       body { margin: 0; padding: 0; }
diff --git a/package.json b/package.json
index fd679bb..dc58a1d 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "transformIgnorePatterns": []
   },
   "peerDependencies": {
-    "ol": ">= 8.0.0 < 10.0.0"
+    "ol": "^10.0.0"
   },
   "dependencies": {
     "debounce": "^2.0.0"
@@ -39,7 +39,7 @@
     "documentation": "^14.0.3",
     "jest": "^29.7.0",
     "jest-environment-jsdom": "^29.7.0",
-    "ol": "^9.1.0",
+    "ol": "^10.0.0",
     "rollup": "^4.14.0"
   },
   "packageManager": "yarn@4.3.1"
diff --git a/src/indoorequal.js b/src/indoorequal.js
index dd4c991..7ad291c 100644
--- a/src/indoorequal.js
+++ b/src/indoorequal.js
@@ -60,7 +60,7 @@ export default class IndoorEqual extends BaseObject {
     this.source = await loadSourceFromTileJSON(`${this.url}${urlParams}`);
 
     this.indoorLayer.setSource(this.source);
-    this.heatmapLayer.setSource(createHeatmapSource(this.source));
+    this.heatmapLayer.setSource(createHeatmapSource(this.indoorLayer));
     this._listenForLevels();
   }
 
@@ -73,11 +73,12 @@ export default class IndoorEqual extends BaseObject {
   }
 
   _listenForLevels() {
+    const layer = this.indoorLayer;
     const source = this.source;
 
     const refreshLevels = debounce(() => {
       const extent = this.map.getView().calculateExtent(this.map.getSize());
-      const features = source.getFeaturesInExtent(extent);
+      const features = layer.getFeaturesInExtent(extent);
       this.set('levels', findAllLevels(features));
     }, 1000);
 
diff --git a/src/layer.js b/src/layer.js
index 964c655..e354bc5 100644
--- a/src/layer.js
+++ b/src/layer.js
@@ -81,17 +81,17 @@ export function getLayer(options) {
   });
 }
 
-export function createHeatmapSource(source) {
-  const tilegrid = source.getTileGrid();
+export function createHeatmapSource(indoorLayer) {
+  const tilegrid = indoorLayer.getSource().getTileGrid();
   const vectorSource = new VectorSource({
     loader(extent, resolution, projection, success, failure) {
       const refresh = () => {
-        const features = source.getFeaturesInExtent(extent);
+        const features = indoorLayer.getFeaturesInExtent(extent);
         vectorSource.clear(true);
         vectorSource.addFeatures(features);
         success(features);
       }
-      source.on('tileloadend', refresh);
+      indoorLayer.getSource().on('tileloadend', refresh);
       refresh();
     },
     loadingstrategy: tile(tilegrid)
diff --git a/test/indoorequal.test.js b/test/indoorequal.test.js
index a062cac..d20bec5 100644
--- a/test/indoorequal.test.js
+++ b/test/indoorequal.test.js
@@ -50,6 +50,12 @@ describe('IndoorEqual', () => {
     };
     const source = {
       on: (_eventName, callback) => callback(),
+    }
+    const getLayerReturn = {
+      on: (_eventName, callback) => callback(),
+      setStyle: jest.fn(),
+      setSource: jest.fn(),
+      setVisible: jest.fn(),
       getFeaturesInExtent: () => {
         return [
           new Feature({ layer: 'area', level: 0 }),
@@ -57,12 +63,6 @@ describe('IndoorEqual', () => {
           new Feature({ layer: 'area', level: -2 }),
         ];
       }
-    }
-    const getLayerReturn = {
-      on: (_eventName, callback) => callback(),
-      setStyle: jest.fn(),
-      setSource: jest.fn(),
-      setVisible: jest.fn(),
     };
     getLayer.mockReturnValueOnce(getLayerReturn);
     getHeatmapLayer.mockReturnValueOnce(getLayerReturn);
diff --git a/yarn.lock b/yarn.lock
index 63b70c2..7c2eac3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3118,10 +3118,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"earcut@npm:^2.2.3":
-  version: 2.2.4
-  resolution: "earcut@npm:2.2.4"
-  checksum: 10c0/01ca51830edd2787819f904ae580087d37351f6048b4565e7add4b3da8a86b7bc19262ab2aa7fdc64129ab03af2d9cec8cccee4d230c82275f97ef285c79aafb
+"earcut@npm:^3.0.0":
+  version: 3.0.0
+  resolution: "earcut@npm:3.0.0"
+  checksum: 10c0/20f3d8492f02452648466d2ce98276c9317c4d6980fc2596b1cb119fc3ef2d034724c5721de2af191331fb43610a27995b0f1b611d3386976b770ae9af7b3bbe
   languageName: node
   linkType: hard
 
@@ -3834,13 +3834,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ieee754@npm:^1.1.12":
-  version: 1.2.1
-  resolution: "ieee754@npm:1.2.1"
-  checksum: 10c0/b0782ef5e0935b9f12883a2e2aa37baa75da6e66ce6515c168697b42160807d9330de9a32ec1ed73149aea02e0d822e572bca6f1e22bdcbd2149e13b050b17bb
-  languageName: node
-  linkType: hard
-
 "import-local@npm:^3.0.2":
   version: 3.2.0
   resolution: "import-local@npm:3.2.0"
@@ -5700,17 +5693,17 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ol@npm:^9.1.0":
-  version: 9.2.4
-  resolution: "ol@npm:9.2.4"
+"ol@npm:^10.0.0":
+  version: 10.0.0
+  resolution: "ol@npm:10.0.0"
   dependencies:
     color-rgba: "npm:^3.0.0"
     color-space: "npm:^2.0.1"
-    earcut: "npm:^2.2.3"
+    earcut: "npm:^3.0.0"
     geotiff: "npm:^2.0.7"
-    pbf: "npm:3.2.1"
-    rbush: "npm:^3.0.1"
-  checksum: 10c0/6eb288d03908ef7276760011867836b737b7508c56a966013dbee6184e4c6b54a458c2efd2dfec08aa86b5cffc3d90488746737b64ef2c05b772ad6ee9bbbfd5
+    pbf: "npm:4.0.1"
+    rbush: "npm:^4.0.0"
+  checksum: 10c0/0d9ec40818e63014024dfacf13a156f842e309c908fdff76c125c4a589280279739ecb5ff8abb0f7671d5cb7d9746eb543e3d59a62e13002ee38fb8dd831b498
   languageName: node
   linkType: hard
 
@@ -5748,10 +5741,10 @@ __metadata:
     documentation: "npm:^14.0.3"
     jest: "npm:^29.7.0"
     jest-environment-jsdom: "npm:^29.7.0"
-    ol: "npm:^9.1.0"
+    ol: "npm:^10.0.0"
     rollup: "npm:^4.14.0"
   peerDependencies:
-    ol: ">= 8.0.0 < 10.0.0"
+    ol: ^10.0.0
   languageName: unknown
   linkType: soft
 
@@ -5955,15 +5948,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"pbf@npm:3.2.1":
-  version: 3.2.1
-  resolution: "pbf@npm:3.2.1"
+"pbf@npm:4.0.1":
+  version: 4.0.1
+  resolution: "pbf@npm:4.0.1"
   dependencies:
-    ieee754: "npm:^1.1.12"
     resolve-protobuf-schema: "npm:^2.1.0"
   bin:
     pbf: bin/pbf
-  checksum: 10c0/63b4a27749a9b5a3cf4260d75f9d91ad8d8b326bcdd2bfafd9460a94d0a297a80f80c70d5481213d6c4ebf03c027aca0ac9287c7d8217d327a6d0456f23b9d3c
+  checksum: 10c0/1a95cc3bdc61ee01d4728f4a57a9f1233732d183a8568818b714a747fd8b957d99b63e1c67f0f72dc5623657c42f88a1a7e44e1fbcd06e2fe2ef9a85a964832e
   languageName: node
   linkType: hard
 
@@ -6125,12 +6117,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"rbush@npm:^3.0.1":
-  version: 3.0.1
-  resolution: "rbush@npm:3.0.1"
+"rbush@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "rbush@npm:4.0.0"
   dependencies:
     quickselect: "npm:^2.0.0"
-  checksum: 10c0/55311586c30cdedaa2220de6f1da45fe1fa806263afbf7b6f4c0078983830c2abc7771187896d68bfc9078cb279079fb4c84971831da4b74384aab2c2c417758
+  checksum: 10c0/a2d407ea87e11eb0ae7b924acb2094994a60c503a892421313a48d2073aa9f1201fe0413b576e81d2c41954d97e78ee507a9ddbf361cc613f33efcce83a85b0a
   languageName: node
   linkType: hard