diff --git a/aio/package.json b/aio/package.json
index a0574e8cae..3f70602a67 100644
--- a/aio/package.json
+++ b/aio/package.json
@@ -89,8 +89,8 @@
     "core-js": "^2.4.1",
     "jasmine": "^2.6.0",
     "ng-pwa-tools": "^0.0.10",
-    "rxjs": "6.0.0-beta.4",
-    "rxjs-compat": "6.0.0-beta.4",
+    "rxjs": "6.0.0-rc.0",
+    "rxjs-compat": "6.0.0-rc.0",
     "tslib": "^1.9.0",
     "web-animations-js": "^2.2.5",
     "zone.js": "^0.8.19"
diff --git a/aio/scripts/_payload-limits.json b/aio/scripts/_payload-limits.json
index 1c587b1ce3..628bc4fc16 100755
--- a/aio/scripts/_payload-limits.json
+++ b/aio/scripts/_payload-limits.json
@@ -3,7 +3,7 @@
     "master": {
       "uncompressed": {
         "inline": 1971,
-        "main": 567849,
+        "main": 565539,
         "polyfills": 40272,
         "prettify": 14886
       }
diff --git a/aio/yarn.lock b/aio/yarn.lock
index e5e668a63b..5b67548a08 100644
--- a/aio/yarn.lock
+++ b/aio/yarn.lock
@@ -7528,13 +7528,13 @@ rx@2.3.24:
   version "2.3.24"
   resolved "https://registry.yarnpkg.com/rx/-/rx-2.3.24.tgz#14f950a4217d7e35daa71bbcbe58eff68ea4b2b7"
 
-rxjs-compat@6.0.0-beta.4:
-  version "6.0.0-beta.4"
-  resolved "https://registry.yarnpkg.com/rxjs-compat/-/rxjs-compat-6.0.0-beta.4.tgz#078654f3a38109cb354d1bf54f7d295194e59e28"
+rxjs-compat@6.0.0-rc.0:
+  version "6.0.0-rc.0"
+  resolved "https://registry.yarnpkg.com/rxjs-compat/-/rxjs-compat-6.0.0-rc.0.tgz#c9d5c3d8846fc2cb01ddd7ebc1bc2ece00d3655a"
 
-rxjs@6.0.0-beta.4:
-  version "6.0.0-beta.4"
-  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.0.0-beta.4.tgz#6506fde30f0f0ca1c94eb948629ac4aa73c0b0c8"
+rxjs@6.0.0-rc.0:
+  version "6.0.0-rc.0"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.0.0-rc.0.tgz#3fed5454dfaf5a01005c973de857f860826d3eac"
   dependencies:
     tslib "^1.9.0"