diff --git a/.jshintrc b/.jshintrc
index d730076b..b8436293 100644
--- a/.jshintrc
+++ b/.jshintrc
@@ -44,6 +44,8 @@
     "strict"        : true,     // Require `use strict` pragma in every file.
     "trailing"      : true,     // Prohibit trailing whitespaces.
     "maxlen"        : 130,      // Limit line length.
+    "unused"        : true,     // Prohibit unused variables.
+    "undef"         : true,     // Prohibit undefined variables.
 
     // == Relaxing Options ================================================
     //
diff --git a/lib/elevate.js b/lib/elevate.js
index 0f61dba6..72d1276f 100644
--- a/lib/elevate.js
+++ b/lib/elevate.js
@@ -16,7 +16,6 @@
 
 'use strict';
 
-const _ = require('lodash');
 const electron = require('electron');
 const isElevated = require('is-elevated');
 const sudoPrompt = require('sudo-prompt');
diff --git a/tests/src/writer.spec.js b/tests/src/writer.spec.js
index 7432c4ca..0feea72f 100644
--- a/tests/src/writer.spec.js
+++ b/tests/src/writer.spec.js
@@ -3,7 +3,6 @@
 const m = require('mochainon');
 const ReadableStream = require('stream').Readable;
 const path = require('path');
-const umount = require('umount');
 const writer = require('../../lib/src/writer');
 
 describe('Writer:', function() {