diff --git a/Gruntfile.js b/Gruntfile.js
index 3a905b4eaf..b4013a8e66 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -23,7 +23,8 @@ module.exports = function(grunt) {
     npm: require('./grunt/config/npm'),
     clean: ['./build', './*.gem', './docs/_site', './examples/shared/*.js', '.module-cache'],
     jshint: require('./grunt/config/jshint'),
-    compare_size: require('./grunt/config/compare_size')
+    compare_size: require('./grunt/config/compare_size'),
+    complexity: require('./grunt/config/complexity')
   });
 
   grunt.config.set('compress', require('./grunt/config/compress'));
diff --git a/grunt/config/complexity.js b/grunt/config/complexity.js
new file mode 100644
index 0000000000..dd5978b7e7
--- /dev/null
+++ b/grunt/config/complexity.js
@@ -0,0 +1,9 @@
+module.exports.generic = {
+  src: ['./build/modules/**/*.js'],
+  options: {
+    errorsOnly: false, // show only maintainability errors
+    cyclomatic: 3,
+    halstead: 8,
+    maintainability: 100
+  }
+};
diff --git a/package.json b/package.json
index da13f9c317..1619c00653 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,8 @@
     "es5-shim": "~2.1.0",
     "wd": "~0.2.2",
     "sauce-tunnel": "~1.1.0",
-    "coverify": "~0.1.1"
+    "coverify": "~0.1.1",
+    "grunt-complexity": "~0.1.3"
   },
   "engines": {
     "node": ">=0.10.0"