diff --git a/aio/package.json b/aio/package.json
index fe9f1db933..43ddda1fb2 100644
--- a/aio/package.json
+++ b/aio/package.json
@@ -51,7 +51,7 @@
     "zone.js": "^0.8.4"
   },
   "devDependencies": {
-    "@angular/cli": "^1.0.0-rc.0",
+    "@angular/cli": "^1.0.0-rc.4",
     "@angular/compiler-cli": "next",
     "@types/jasmine": "2.5.38",
     "@types/node": "~6.0.60",
diff --git a/aio/yarn.lock b/aio/yarn.lock
index 8df83761dc..c1783944c8 100644
--- a/aio/yarn.lock
+++ b/aio/yarn.lock
@@ -6,16 +6,12 @@
   version "4.0.0-rc.5"
   resolved "https://registry.yarnpkg.com/@angular/animations/-/animations-4.0.0-rc.5.tgz#c6e139f4eef4e357dbf3e5e941726be984498489"
 
-"@angular/cli@^1.0.0-rc.0":
-  version "1.0.0-rc.0"
-  resolved "https://registry.yarnpkg.com/@angular/cli/-/cli-1.0.0-rc.0.tgz#dcf9e1d1f4ed886ca59de30a67fcc5ac98a2b061"
+"@angular/cli@^1.0.0-rc.4":
+  version "1.0.0-rc.4"
+  resolved "https://registry.yarnpkg.com/@angular/cli/-/cli-1.0.0-rc.4.tgz#e542f95378fd996fb0bc3b9d686bf3a457fe61b4"
   dependencies:
-    "@angular/compiler" ">=2.3.1 <5.0.0 || >=4.0.0-beta <5.0.0"
-    "@angular/compiler-cli" ">=2.3.1 <5.0.0 || >=4.0.0-beta <5.0.0"
-    "@angular/core" ">=2.3.1 <5.0.0 || >=4.0.0-beta <5.0.0"
-    "@angular/tsc-wrapped" ">=0.5.0 <5.0.0 || >=4.0.0-beta <5.0.0"
     "@ngtools/json-schema" "1.0.5"
-    "@ngtools/webpack" "1.2.11"
+    "@ngtools/webpack" "1.2.14"
     autoprefixer "^6.5.3"
     chalk "^1.1.3"
     common-tags "^1.3.1"
@@ -45,7 +41,6 @@
     lodash "^4.11.1"
     minimatch "^3.0.3"
     node-modules-path "^1.0.0"
-    node-sass "^4.3.0"
     nopt "^4.0.1"
     opn "4.0.2"
     portfinder "~1.0.12"
@@ -72,12 +67,14 @@
     webpack-dev-server "~2.3.0"
     webpack-merge "^2.4.0"
     zone.js "^0.7.2"
+  optionalDependencies:
+    node-sass "^4.3.0"
 
 "@angular/common@next":
   version "4.0.0-rc.5"
   resolved "https://registry.yarnpkg.com/@angular/common/-/common-4.0.0-rc.5.tgz#27c1ff77d3a86fa77533255f9829a9b7b366be60"
 
-"@angular/compiler-cli@>=2.3.1 <5.0.0 || >=4.0.0-beta <5.0.0", "@angular/compiler-cli@next":
+"@angular/compiler-cli@next":
   version "4.0.0-rc.5"
   resolved "https://registry.yarnpkg.com/@angular/compiler-cli/-/compiler-cli-4.0.0-rc.5.tgz#cb7f62459d7063c8a0188a7870eb773cc7f27ef3"
   dependencies:
@@ -85,11 +82,11 @@
     minimist "^1.2.0"
     reflect-metadata "^0.1.2"
 
-"@angular/compiler@>=2.3.1 <5.0.0 || >=4.0.0-beta <5.0.0", "@angular/compiler@next":
+"@angular/compiler@next":
   version "4.0.0-rc.5"
   resolved "https://registry.yarnpkg.com/@angular/compiler/-/compiler-4.0.0-rc.5.tgz#3f5c0fc99c0fd843287a3f2efc62e28b0d8fa177"
 
-"@angular/core@>=2.3.1 <5.0.0 || >=4.0.0-beta <5.0.0", "@angular/core@next":
+"@angular/core@next":
   version "4.0.0-rc.5"
   resolved "https://registry.yarnpkg.com/@angular/core/-/core-4.0.0-rc.5.tgz#2e4a2d8ca2f1466857ebb634240e17ff9b697ec5"
 
@@ -137,22 +134,16 @@
   dependencies:
     tsickle "^0.21.0"
 
-"@angular/tsc-wrapped@>=0.5.0 <5.0.0 || >=4.0.0-beta <5.0.0":
-  version "4.0.0-rc.2"
-  resolved "https://registry.yarnpkg.com/@angular/tsc-wrapped/-/tsc-wrapped-4.0.0-rc.2.tgz#d7023d93f4576b6f776ffc7175ff760e7e133705"
-  dependencies:
-    tsickle "^0.21.0"
-
 "@ngtools/json-schema@1.0.5":
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/@ngtools/json-schema/-/json-schema-1.0.5.tgz#ad39037c70c88b245ac7267a71777646b6063d77"
 
-"@ngtools/webpack@1.2.11":
-  version "1.2.11"
-  resolved "https://registry.yarnpkg.com/@ngtools/webpack/-/webpack-1.2.11.tgz#b587b1e7eb88bd68b973681669c00e7b4b7f8ea0"
+"@ngtools/webpack@1.2.14":
+  version "1.2.14"
+  resolved "https://registry.yarnpkg.com/@ngtools/webpack/-/webpack-1.2.14.tgz#ff59f504196871e69b5d01a21ea747d6f8e5e546"
   dependencies:
     enhanced-resolve "^3.1.0"
-    loader-utils "^0.2.16"
+    loader-utils "^1.0.2"
     magic-string "^0.19.0"
     source-map "^0.5.6"