diff --git a/gulpfile.js b/gulpfile.js
index 9083a12..130f859 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -6,6 +6,8 @@ var gulp = require("gulp"),
     gPlumber = require("gulp-plumber"),
     gUglify = require("gulp-uglify"),
     gModernizr = require("gulp-modernizr"),
+    gPostCSS = require("gulp-postcss"),
+    autoprefixer = require("autoprefixer"),
     lessGlob = require("less-plugin-glob"),
     lessAutoPrefix = require("less-plugin-autoprefix"),
     lessCleanCSS = require("less-plugin-clean-css");
@@ -14,11 +16,11 @@ var gulp = require("gulp"),
 var prod = gUtil.env.production;
 
 // initialize plugins
-var autoprefix = new lessAutoPrefix({ remove: false, cascade: false, browsers: [ "last 2 versions" ] }),
-    cleancss = new lessCleanCSS({ advanced: true });
+var cleancss = new lessCleanCSS({ advanced: true });
 
-// declare less plugins and modernizr tests
-var lessPlugins = prod ? [ lessGlob, autoprefix, cleancss ] : [ lessGlob, autoprefix ],
+// declare plugin settings and modernizr tests
+var lessPlugins = prod ? [ lessGlob, cleancss ] : [ lessGlob ],
+    autoprefixerSettings = { remove: false, cascade: false, browsers: [ "last 6 versions" ] },
     modernizrTests = [];
 
 // javascript files for the public site
@@ -68,6 +70,7 @@ function processLess(filename) {
     return gulp.src("resources/assets/less/" + filename + ".less")
         .pipe(gPlumber(plumberError))
         .pipe(gLess({ plugins: lessPlugins, paths: "bower_components/" }))
+        .pipe(gPostCSS([ autoprefixer(autoprefixerSettings) ]))
         .pipe(gConcat(filename + ".css"))
         .pipe(gulp.dest("public/css/"));
 }
diff --git a/package.json b/package.json
index bae8d02..144062f 100644
--- a/package.json
+++ b/package.json
@@ -4,14 +4,15 @@
     "gulp-livereload": "^3.8.1"
   },
   "dependencies": {
+    "autoprefixer": "^6.3.6",
     "gulp": "^3.9.1",
     "gulp-concat": "^2.6.0",
     "gulp-less": "^3.0.5",
     "gulp-modernizr": "^1.0.0-alpha",
     "gulp-plumber": "^1.1.0",
+    "gulp-postcss": "^6.1.1",
     "gulp-uglify": "^1.5.3",
     "gulp-util": "^3.0.7",
-    "less-plugin-autoprefix": "^1.5.1",
     "less-plugin-clean-css": "^1.5.1",
     "less-plugin-glob": "^1.1.1"
   }