diff --git a/terminal-sample/package.json b/terminal-sample/package.json
index f880bdf3..84607311 100644
--- a/terminal-sample/package.json
+++ b/terminal-sample/package.json
@@ -26,7 +26,8 @@
 		"onCommand:terminalTest.sendTextNoNewLine",
 		"onCommand:terminalTest.show",
 		"onCommand:terminalTest.showPreserveFocus",
-		"onCommand:terminalTest.terminals"
+		"onCommand:terminalTest.terminals",
+		"onCommand:terminalTest.updateEnvironment"
 	],
 	"main": "./out/extension.js",
 	"contributes": {
@@ -90,6 +91,10 @@
 			{
 				"command": "terminalTest.terminals",
 				"title": "Terminal API: View terminals"
+			},
+			{
+				"command": "terminalTest.updateEnvironment",
+				"title": "Terminal API: Update environment"
 			}
 		]
 	},
diff --git a/terminal-sample/src/extension.ts b/terminal-sample/src/extension.ts
index d84674ed..2e605f77 100644
--- a/terminal-sample/src/extension.ts
+++ b/terminal-sample/src/extension.ts
@@ -5,8 +5,6 @@ import * as vscode from 'vscode';
 export function activate(context: vscode.ExtensionContext) {
 	let NEXT_TERM_ID = 1;
 
-	vscode.window.showInformationMessage('Hello World!');
-
 	console.log("Terminals: " + (<any>vscode.window).terminals.length);
 
 	// vscode.window.onDidOpenTerminal
@@ -146,6 +144,12 @@ export function activate(context: vscode.ExtensionContext) {
 			console.log(`onDidChangeTerminalDimensions: terminal:${event.terminal.name}, columns=${event.dimensions.columns}, rows=${event.dimensions.rows}`);
 		});
 	}));
+
+	context.subscriptions.push(vscode.commands.registerCommand('terminalTest.updateEnvironment', () => {
+		const collection = (<any>vscode.window).getEnvironmentVariableCollection();
+		collection.replace('FOO', 'BAR');
+		collection.append('PATH', '/test/path');
+	}));
 }
 
 function colorText(text: string): string {