diff --git a/package.json b/package.json
index e72ba49..340d34f 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
   ],
   "license": "MIT",
   "dependencies": {
-    "autoprefixer": "^9.0.0",
+    "autoprefixer": "^10.0.0",
     "coffee-script": "^1.11.0",
     "ejs": "^2.3.4",
     "harp-minify": "^0.4.0",