diff --git a/src/Illuminate/Contracts/Foundation/Application.php b/src/Illuminate/Contracts/Foundation/Application.php
index 8f21c1c0e7e5..054fcc18d9c2 100644
--- a/src/Illuminate/Contracts/Foundation/Application.php
+++ b/src/Illuminate/Contracts/Foundation/Application.php
@@ -1,5 +1,6 @@
 <?php namespace Illuminate\Contracts\Foundation;
 
+use Closure;
 use Illuminate\Contracts\Container\Container;
 
 interface Application extends Container {
@@ -75,4 +76,19 @@ public function booting($callback);
 	 */
 	public function booted($callback);
 
+	/**
+	 * Get the environment file the application is using.
+	 *
+	 * @return string
+	 */
+	public function environmentFile();
+
+	/**
+	 * Detect the application's current environment.
+	 *
+	 * @param  Closure  $callback
+	 * @return string
+	 */
+	public function detectEnvironment(Closure $callback);
+
 }