diff --git a/lib/cli.js b/lib/cli.js
index d7451190..8bcf658e 100755
--- a/lib/cli.js
+++ b/lib/cli.js
@@ -31,6 +31,7 @@ const cli = meow({
           -i, --ignore          Ignore dependencies based on succeeding glob.
           -E, --save-exact      Save exact version (x.y.z) instead of caret (^x.y.z) in package.json.
           --specials            List of depcheck specials to include in check for unused dependencies.
+          --ignore-dirs         Ignore paths - directory names to ignore.
           --no-color            Force or disable color output.
           --no-emoji            Remove emoji support. No emoji in default in CI environments.
           --debug               Debug output. Throw in a gist when creating issues on github.
@@ -68,7 +69,8 @@ const cli = meow({
         ],
         string: [
             'ignore',
-            'specials'
+            'specials',
+            'ignore-dirs'
         ]
     });
 
@@ -85,7 +87,8 @@ const options = {
     installer: process.env.NPM_CHECK_INSTALLER || 'npm',
     debug: cli.flags.debug,
     spinner: cli.flags.spinner,
-    ignore: cli.flags.ignore
+    ignore: cli.flags.ignore,
+    ignoreDirs: cli.flags.ignoreDirs
 };
 
 if (options.debug) {
diff --git a/lib/in/get-unused-packages.js b/lib/in/get-unused-packages.js
index 627123a1..a35790aa 100644
--- a/lib/in/get-unused-packages.js
+++ b/lib/in/get-unused-packages.js
@@ -24,6 +24,16 @@ function checkUnused(currentState) {
     const spinner = ora(`Checking for unused packages. --skip-unused if you don't want this.`);
     spinner.enabled = spinner.enabled && currentState.get('spinner');
     spinner.start();
+    const defaultIgnoreDirs = [
+        'sandbox',
+        'dist',
+        'generated',
+        '.generated',
+        'build',
+        'fixtures',
+        'jspm_packages'
+    ];
+    const ignoreDirs = defaultIgnoreDirs.concat(currentState.get('ignoreDirs'));
 
     return new Promise(resolve => {
         if (skipUnused(currentState)) {
@@ -32,15 +42,7 @@ function checkUnused(currentState) {
         }
 
         const depCheckOptions = {
-            ignoreDirs: [
-                'sandbox',
-                'dist',
-                'generated',
-                '.generated',
-                'build',
-                'fixtures',
-                'jspm_packages'
-            ],
+            ignoreDirs: ignoreDirs,
             ignoreMatches: [
                 'gulp-*',
                 'grunt-*',
diff --git a/lib/state/state.js b/lib/state/state.js
index 94c5dc19..ce6d546a 100644
--- a/lib/state/state.js
+++ b/lib/state/state.js
@@ -20,6 +20,7 @@ const defaultOptions = {
     spinner: false,
     installer: 'npm',
     ignore: [],
+    ignoreDirs: [],
 
     globalPackages: {},
     cwdPackageJson: {devDependencies: {}, dependencies: {}},