diff --git a/build/paths.js b/build/paths.js
index aabc3dab..b78fe559 100644
--- a/build/paths.js
+++ b/build/paths.js
@@ -6,5 +6,6 @@ module.exports = {
   outputName: 'redoc.full.js',
   output: 'dist/',
   tmp: '.tmp/',
-  demo: 'demo/**/*'
+  demo: 'demo/**/*',
+  tests: '{lib,tests}/**/*.spec.js'
 };
diff --git a/build/tasks/lint.js b/build/tasks/lint.js
index e073f8fa..63559646 100644
--- a/build/tasks/lint.js
+++ b/build/tasks/lint.js
@@ -3,7 +3,7 @@ var eslint = require('gulp-eslint');
 var paths = require('../paths');
 
 gulp.task('lint', function () {
-  return gulp.src(paths.source)
+  return gulp.src([paths.source, paths.tests])
     .pipe(eslint())
     .pipe(eslint.format())
     .pipe(eslint.failAfterError());