diff --git a/packages/angular-cli/package.json b/packages/angular-cli/package.json
index af1571836881..8e85feb70a0f 100644
--- a/packages/angular-cli/package.json
+++ b/packages/angular-cli/package.json
@@ -31,7 +31,7 @@
     "@angular/compiler-cli": "^2.3.1",
     "@angular/core": "^2.3.1",
     "@ngtools/webpack": "^1.0.0",
-    "async": "^2.1.4",
+    "async": "^3.2.2",
     "autoprefixer": "^6.5.3",
     "chalk": "^1.1.3",
     "common-tags": "^1.3.1",
@@ -56,7 +56,7 @@
     "isbinaryfile": "^2.0.3",
     "json-loader": "^0.5.4",
     "karma-sourcemap-loader": "^0.3.7",
-    "karma-webpack": "^1.8.0",
+    "karma-webpack": "^4.0.0",
     "less": "^2.7.1",
     "less-loader": "^2.2.3",
     "lodash": "^4.11.1",
@@ -79,11 +79,11 @@
     "resolve": "^1.1.7",
     "rimraf": "^2.5.3",
     "rsvp": "^3.0.17",
-    "sass-loader": "^4.0.1",
+    "sass-loader": "^6.0.7",
     "script-loader": "^0.7.0",
     "semver": "^5.1.0",
     "silent-error": "^1.0.0",
-    "source-map-loader": "^0.1.5",
+    "source-map-loader": "^1.0.0",
     "sourcemap-istanbul-instrumenter-loader": "^0.2.0",
     "style-loader": "^0.13.1",
     "stylus": "^0.54.5",
@@ -95,7 +95,7 @@
     "typescript": "~2.0.3",
     "url-loader": "^0.5.7",
     "walk-sync": "^0.2.6",
-    "webpack": "2.2.0-rc.3",
+    "webpack": "4.0.0",
     "webpack-dev-server": "2.2.0-rc.0",
     "webpack-merge": "^0.14.0",
     "webpack-sources": "^0.1.3",