diff --git a/package.json b/package.json
index f3e563a..12c9534 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
   "dependencies": {
     "core-js": "^2.5.7",
     "cheerio": "^1.0.0-rc.2",
-    "gulp": "^3.9.1",
+    "gulp": "^4.0.0",
     "gulp-csslint": "^1.0.1",
     "gulp-csslint-report": "^2.0.0",
     "gulp-gzip": "^1.4.2",
@@ -25,7 +25,7 @@
     "typescript": "^2.6.2",
     "typography": "^0.16.17",
     "typography-theme-wordpress-2016": "^0.15.10",
-    "webpack": "4.28.4",
+    "webpack": "5.0.0",
     "terser": "3.14.1"
   },
   "devDependencies": {