diff --git a/composer.json b/composer.json
index 0bc5664..c26f988 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
 	"name": "martywallace/tempest",
-	"version": "4.1.0",
+	"version": "4.1.1",
 	"description": "A tiny PHP framework.",
 	"homepage": "https://github.com/MartyWallace/Tempest",
 	"type": "library",
diff --git a/src/Tempest/Env.php b/src/Tempest/Env.php
index 9d7bca5..385e884 100644
--- a/src/Tempest/Env.php
+++ b/src/Tempest/Env.php
@@ -26,8 +26,6 @@ public static function load($root) {
 			if (is_file(rtrim($root, '/') . '/.env')) {
 				self::$_env = new DotEnv($root);
 				self::$_env->load();
-
-				self::$_env->required('dev')->allowedValues(['true', 'false']);
 			} else {
 				// No .env variables declared.
 				// ...