diff --git a/extensions/grunt/src/main.ts b/extensions/grunt/src/main.ts
index d8ef8a8267374..597aa909701f2 100644
--- a/extensions/grunt/src/main.ts
+++ b/extensions/grunt/src/main.ts
@@ -295,7 +295,7 @@ class TaskDetector {
 	private updateProvider(): void {
 		if (!this.taskProvider && this.detectors.size > 0) {
 			const thisCapture = this;
-			this.taskProvider = vscode.workspace.registerTaskProvider('grunt', {
+			this.taskProvider = vscode.tasks.registerTaskProvider('grunt', {
 				provideTasks: (): Promise<vscode.Task[]> => {
 					return thisCapture.getTasks();
 				},
diff --git a/extensions/gulp/src/main.ts b/extensions/gulp/src/main.ts
index 20d824c25ed78..534756ac81d05 100644
--- a/extensions/gulp/src/main.ts
+++ b/extensions/gulp/src/main.ts
@@ -277,7 +277,7 @@ class TaskDetector {
 	private updateProvider(): void {
 		if (!this.taskProvider && this.detectors.size > 0) {
 			const thisCapture = this;
-			this.taskProvider = vscode.workspace.registerTaskProvider('gulp', {
+			this.taskProvider = vscode.tasks.registerTaskProvider('gulp', {
 				provideTasks(): Promise<vscode.Task[]> {
 					return thisCapture.getTasks();
 				},
diff --git a/extensions/jake/src/main.ts b/extensions/jake/src/main.ts
index b8c6d5e734446..93fa1aa285b8d 100644
--- a/extensions/jake/src/main.ts
+++ b/extensions/jake/src/main.ts
@@ -269,7 +269,7 @@ class TaskDetector {
 	private updateProvider(): void {
 		if (!this.taskProvider && this.detectors.size > 0) {
 			const thisCapture = this;
-			this.taskProvider = vscode.workspace.registerTaskProvider('jake', {
+			this.taskProvider = vscode.tasks.registerTaskProvider('jake', {
 				provideTasks(): Promise<vscode.Task[]> {
 					return thisCapture.getTasks();
 				},
diff --git a/extensions/npm/src/main.ts b/extensions/npm/src/main.ts
index 3777f39375737..4092e27e662ce 100644
--- a/extensions/npm/src/main.ts
+++ b/extensions/npm/src/main.ts
@@ -70,7 +70,7 @@ function registerTaskProvider(context: vscode.ExtensionContext): vscode.Disposab
 		context.subscriptions.push(workspaceWatcher);
 
 		let provider: vscode.TaskProvider = new NpmTaskProvider();
-		let disposable = vscode.workspace.registerTaskProvider('npm', provider);
+		let disposable = vscode.tasks.registerTaskProvider('npm', provider);
 		context.subscriptions.push(disposable);
 		return disposable;
 	}
diff --git a/extensions/typescript-language-features/src/extension.ts b/extensions/typescript-language-features/src/extension.ts
index 7416c5efdc370..d9f8284fd2465 100644
--- a/extensions/typescript-language-features/src/extension.ts
+++ b/extensions/typescript-language-features/src/extension.ts
@@ -38,7 +38,7 @@ export function activate(
 	});
 
 	registerCommands(commandManager, lazyClientHost, pluginManager);
-	context.subscriptions.push(vscode.workspace.registerTaskProvider('typescript', new TscTaskProvider(lazyClientHost.map(x => x.serviceClient))));
+	context.subscriptions.push(vscode.tasks.registerTaskProvider('typescript', new TscTaskProvider(lazyClientHost.map(x => x.serviceClient))));
 	context.subscriptions.push(new LanguageConfigurationManager());
 
 	import('./features/tsconfig').then(module => {