diff --git a/lib/helpers/buildTree.js b/lib/helpers/buildTree.js
index 361d8bf..dbc3aaf 100644
--- a/lib/helpers/buildTree.js
+++ b/lib/helpers/buildTree.js
@@ -1,6 +1,6 @@
 'use strict';
 
-var map = require('lodash.map');
+var map = require('collection-map');
 
 var metadata = require('./metadata');
 
diff --git a/lib/helpers/normalizeArgs.js b/lib/helpers/normalizeArgs.js
index a7e44d1..6e5daa5 100644
--- a/lib/helpers/normalizeArgs.js
+++ b/lib/helpers/normalizeArgs.js
@@ -2,8 +2,8 @@
 
 var assert = require('assert');
 
-var map = require('lodash.map');
-var flatten = require('lodash.flatten');
+var map = require('arr-map');
+var flatten = require('arr-flatten');
 
 function normalizeArgs(registry, args) {
   function getFunction(task) {
diff --git a/lib/registry.js b/lib/registry.js
index a8504fd..d441232 100644
--- a/lib/registry.js
+++ b/lib/registry.js
@@ -1,6 +1,6 @@
 'use strict';
 
-var reduce = require('lodash.reduce');
+var reduce = require('object.reduce');
 
 var validateRegistry = require('./helpers/validateRegistry');
 
diff --git a/lib/tree.js b/lib/tree.js
index 4de6798..ed06364 100644
--- a/lib/tree.js
+++ b/lib/tree.js
@@ -1,7 +1,7 @@
 'use strict';
 
-var defaults = require('lodash.defaults');
-var map = require('lodash.map');
+var defaults = require('object.defaults');
+var map = require('collection-map');
 
 var metadata = require('./helpers/metadata');
 
diff --git a/package.json b/package.json
index 28d3033..671cf72 100644
--- a/package.json
+++ b/package.json
@@ -26,13 +26,14 @@
     "coveralls": "npm run cover && istanbul-coveralls"
   },
   "dependencies": {
+    "arr-flatten": "^1.0.1",
+    "arr-map": "^2.0.0",
     "bach": "^1.0.0",
+    "collection-map": "^0.1.0",
     "es6-weak-map": "^2.0.1",
     "last-run": "^1.1.0",
-    "lodash.defaults": "^4.0.1",
-    "lodash.flatten": "^4.0.0",
-    "lodash.map": "^4.1.0",
-    "lodash.reduce": "^4.1.0",
+    "object.defaults": "^0.3.0",
+    "object.reduce": "^0.1.7",
     "undertaker-registry": "^1.0.0"
   },
   "devDependencies": {