diff --git a/package.json b/package.json
index 31f6e55..26903ce 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
   "homepage": "https://github.com/lightspeeddevelopment/lsx-health-plan#readme",
   "devDependencies": {
     "gulp": "^4.0.2",
-    "gulp-autoprefixer": "^8.0.0",
+    "gulp-autoprefixer": "^9.0.0",
     "gulp-gettext": "^0.3.0",
     "gulp-jshint": "^2.0.4",
     "gulp-plumber": "^1.2.1",