diff --git a/src/sources/editor.jsx b/src/sources/editor.jsx
index 7580ff8..9cf2c70 100644
--- a/src/sources/editor.jsx
+++ b/src/sources/editor.jsx
@@ -21,6 +21,7 @@ class UnsupportedSource extends React.Component {
 class VectorSource extends React.Component {
 	static propTypes = {
 		source: React.PropTypes.instanceOf(Immutable.Map).isRequired,
+		onSourceChanged: React.PropTypes.func.isRequired,
   }
 
 	constructor(props) {
@@ -30,7 +31,11 @@ class VectorSource extends React.Component {
 
 	render() {
 		return <div>
-			<Input name="url" label="TileJSON url" value={this.props.source.get("url")} />
+			<Input
+				onChange={e => this.props.onSourceChanged(this.props.source.set('url', e.target.value))}
+				name="url" label="TileJSON url"
+				value={this.props.source.get("url")}
+				/>
 			<Input name="minzoom" label="Minimum zoom level" value={this.props.source.get("minzoom")} />
 			<Input name="maxzoom" label="Maximum zoom level" value={this.props.source.get("maxzoom")} />
 		</div>
@@ -41,6 +46,7 @@ export class SourceEditor extends React.Component {
 	static propTypes = {
 		sourceId: React.PropTypes.string.isRequired,
 		source: React.PropTypes.instanceOf(Immutable.Map).isRequired,
+		onSourceChanged: React.PropTypes.func.isRequired,
 	}
 
 	constructor(props) {
@@ -58,6 +64,7 @@ export class SourceEditor extends React.Component {
 	sourceFromType(type) {
 		if (type === "vector") {
 			return <VectorSource
+				onSourceChanged={s => this.props.onSourceChanged(this.props.sourceId, s)}
 				source={this.props.source}
 			/>
 		}
diff --git a/src/sources/list.jsx b/src/sources/list.jsx
index 061a3d7..19b67fd 100644
--- a/src/sources/list.jsx
+++ b/src/sources/list.jsx
@@ -14,6 +14,7 @@ import PureRenderMixin from 'react-addons-pure-render-mixin';
 export class SourceList extends React.Component {
 	static propTypes = {
 		sources: React.PropTypes.instanceOf(Immutable.Map).isRequired,
+		onSourcesChanged: React.PropTypes.func.isRequired,
 	}
 
 	constructor(props) {
@@ -21,12 +22,18 @@ export class SourceList extends React.Component {
 		this.shouldComponentUpdate = PureRenderMixin.shouldComponentUpdate.bind(this);
 	}
 
+	onSourceChanged(sourceId, changedSource) {
+		const changedSources = this.props.sources.set(sourceId, changedSource)
+		this.props.onSourcesChanged(changedSources)
+	}
+
 	render() {
 		const sourceEditors = this.props.sources.map((source, sourceId) => {
 			return <SourceEditor
 				key={sourceId}
 				sourceId={sourceId}
 				source={source}
+				onSourceChanged={this.onSourceChanged.bind(this)}
 			/>
 		}).toIndexedSeq()
 
diff --git a/src/workspace.jsx b/src/workspace.jsx
index 63c6a89..69f1ca7 100644
--- a/src/workspace.jsx
+++ b/src/workspace.jsx
@@ -22,11 +22,17 @@ export class WorkspaceDrawer extends React.Component {
 		this.props.onStyleChanged(changedStyle)
 	}
 
+	onSourcesChanged(changedSources) {
+		const changedStyle = this.props.mapStyle.set('sources', changedSources)
+		this.props.onStyleChanged(changedStyle)
+	}
+
 	render() {
 		let workspaceContent = null
 
 		if(this.props.workContext === "sources") {
 			workspaceContent = <SourceList
+				onSourcesChanged={this.onSourcesChanged.bind(this)}
 				sources={this.props.mapStyle.get('sources')}
 			/>
 		}