diff --git a/aio/package.json b/aio/package.json
index 80004cd03a..fe5da44c91 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.1",
-    "rxjs-compat": "^6.0.0-beta.1",
+    "rxjs": "6.0.0-beta.4",
+    "rxjs-compat": "6.0.0-beta.4",
     "tslib": "^1.9.0",
     "web-animations-js": "^2.2.5",
     "zone.js": "^0.8.19"
diff --git a/aio/yarn.lock b/aio/yarn.lock
index 2b0718003e..a02516c939 100644
--- a/aio/yarn.lock
+++ b/aio/yarn.lock
@@ -7528,9 +7528,15 @@ 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.1:
-  version "6.0.0-beta.1"
-  resolved "https://registry.yarnpkg.com/rxjs-compat/-/rxjs-compat-6.0.0-beta.1.tgz#ef7289354600f139253f719cbb2f0a6b2d572108"
+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@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"
+  dependencies:
+    tslib "^1.9.0"
 
 rxjs@^5.5.6:
   version "5.5.7"
@@ -7538,12 +7544,6 @@ rxjs@^5.5.6:
   dependencies:
     symbol-observable "1.0.1"
 
-rxjs@^6.0.0-beta.1:
-  version "6.0.0-beta.1"
-  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.0.0-beta.1.tgz#ac6b181251ece21051435c3da2538444b43a37c1"
-  dependencies:
-    tslib "^1.9.0"
-
 safe-buffer@5.1.1, safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"