diff --git a/src/main/Embeddable.js b/src/main/Embeddable.js
index b63c931..c09b5e3 100644
--- a/src/main/Embeddable.js
+++ b/src/main/Embeddable.js
@@ -8,6 +8,7 @@ export default class Embeddable extends React.Component {
         let seatsio = await this.getSeatsio();
         let {id, className, onRenderStarted, ...config} = this.props;
         config.divId = this.props.id;
+        config.chartJsUrl = this.props.chartJsUrl;
         let chart = this.createChart(seatsio, config).render();
         this.chart = chart;
         if (this.props.onRenderStarted) this.props.onRenderStarted(chart);
@@ -31,7 +32,7 @@ export default class Embeddable extends React.Component {
             let script = document.createElement('script');
             script.onload = () => resolve(seatsio);
             script.onerror = () => reject(`Could not load ${script.src}`);
-            script.src = 'https://cdn.seatsio.net/chart.js';
+            script.src = this.props.chartJsUrl;
             document.head.appendChild(script);
         });
     }
@@ -44,5 +45,6 @@ export default class Embeddable extends React.Component {
 }
 
 Embeddable.defaultProps = {
-    id: 'chart'
+    id: 'chart',
+    chartJsUrl: 'https://cdn.seatsio.net/chart.js'
 };
\ No newline at end of file
diff --git a/src/test/SeatsioDesigner.test.js b/src/test/SeatsioDesigner.test.js
index 47a7d31..2c85bb7 100644
--- a/src/test/SeatsioDesigner.test.js
+++ b/src/test/SeatsioDesigner.test.js
@@ -27,28 +27,30 @@ describe("SeatsioDesigner", () => {
     };
 
     it('renders the designer', () => {
-        let chart = mount((
+        let chart = mount(
             <SeatsioDesigner/>
-        ));
+        );
 
         expect(chart.find('div#chart').length).toEqual(1);
     });
 
     it('passes parameters onto the designer', () => {
         return new Promise(resolve => {
-            mount((
+            mount(
                 <SeatsioDesigner
                     id="someID"
                     className="someClassName"
                     designerKey="aDesignerKey"
+                    chartJsUrl="https://www.google.com"
                     onRenderStarted={chart => {
                         expect(chart.props).toEqual({
                             divId: 'someID',
-                            designerKey: 'aDesignerKey'
+                            designerKey: 'aDesignerKey',
+                            chartJsUrl: 'https://www.google.com'
                         });
                         resolve();
                     }}/>
-            ));
+            );
         });
     });
 
diff --git a/src/test/SeatsioEventManager.test.js b/src/test/SeatsioEventManager.test.js
index b177cd6..f4e6372 100644
--- a/src/test/SeatsioEventManager.test.js
+++ b/src/test/SeatsioEventManager.test.js
@@ -41,10 +41,12 @@ describe("SeatsioEventManager", () => {
                     id="someID"
                     className="someClassName"
                     publicKey="aPublicKey"
+                    chartJsUrl="https://www.google.com"
                     onRenderStarted={chart => {
                         expect(chart.props).toEqual({
                             divId: 'someID',
-                            publicKey: 'aPublicKey'
+                            publicKey: 'aPublicKey',
+                            chartJsUrl:"https://www.google.com"
                         });
                         resolve();
                     }}/>
diff --git a/src/test/SeatsioSeatingChart.test.js b/src/test/SeatsioSeatingChart.test.js
index e08f100..bc245b8 100644
--- a/src/test/SeatsioSeatingChart.test.js
+++ b/src/test/SeatsioSeatingChart.test.js
@@ -34,6 +34,21 @@ describe("SeatsioSeatingChart", () => {
         expect(chart.find('div#chart').length).toEqual(1);
     });
 
+    it('renders the chart with default properties', () => {
+        return new Promise(resolve => {
+            mount((
+                <SeatsioSeatingChart
+                    onRenderStarted={chart => {
+                        expect(chart.props).toEqual({
+                            divId: "chart",
+                            chartJsUrl:"https://cdn.seatsio.net/chart.js"
+                        });
+                        resolve();
+                    }}/>
+            ));
+        });
+    });
+
     it('renders the chart in a div with the specified ID', () => {
         let chart = mount((
             <SeatsioSeatingChart id="mySuperDuperChart"/>
@@ -57,10 +72,12 @@ describe("SeatsioSeatingChart", () => {
                     id="someID"
                     className="someClassName"
                     publicKey="aPublicKey"
+                    chartJsUrl="https://www.google.com"
                     onRenderStarted={chart => {
                         expect(chart.props).toEqual({
                             divId: 'someID',
-                            publicKey: 'aPublicKey'
+                            publicKey: 'aPublicKey',
+                            chartJsUrl:"https://www.google.com"
                         });
                         resolve();
                     }}/>