diff --git a/package.json b/package.json
index 20676a0..a3f0e68 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "gulp-rename": "^1.2.0",
     "gulp-sass": "^2.0.4",
     "gulp-sourcemaps": "^1.3.0",
-    "gulp-uglify": "^1.1.0",
+    "gulp-uglify": "^2.1.0",
     "history": "^3.0.0",
     "json-loader": "^0.5.4",
     "lodash": "^3.9.3",
@@ -86,7 +86,7 @@
     "redux-logger": "^2.6.1",
     "redux-thunk": "^2.1.0",
     "run-sequence": "^1.0.2",
-    "sass-loader": "^3.2.1",
+    "sass-loader": "^6.0.7",
     "sequelize": "^3.23.3",
     "sequelize-handlers": "^0.1.7",
     "serve-favicon": "^2.2.0",
@@ -94,7 +94,7 @@
     "socket.io-client": "^1.3.5",
     "style-loader": "^0.13.1",
     "watch-ignore-webpack-plugin": "^1.0.0",
-    "webpack": "^1.13.1",
+    "webpack": "^4.0.0",
     "xpath-dom": "^0.2.2"
   },
   "devDependencies": {