diff --git a/packages/@angular/cli/package.json b/packages/@angular/cli/package.json
index 67a37e40..34947d8f 100644
--- a/packages/@angular/cli/package.json
+++ b/packages/@angular/cli/package.json
@@ -38,8 +38,8 @@
     "common-tags": "^1.3.1",
     "copy-webpack-plugin": "^4.1.1",
     "core-object": "^3.1.0",
-    "css-loader": "^0.28.1",
-    "cssnano": "^3.10.0",
+    "css-loader": "^1.0.0",
+    "cssnano": "^4.0.0",
     "denodeify": "^1.2.1",
     "ember-cli-string-utils": "^1.0.0",
     "exports-loader": "^0.6.3",