diff --git a/aio/package.json b/aio/package.json
index 433152698d..86421aa59e 100644
--- a/aio/package.json
+++ b/aio/package.json
@@ -82,7 +82,7 @@
     "core-js": "^2.4.1",
     "jasmine": "^2.6.0",
     "ng-pwa-tools": "^0.0.10",
-    "rxjs": "^5.2.0",
+    "rxjs": "5.5.0-beta.7",
     "tslib": "^1.7.1",
     "web-animations-js": "^2.2.5",
     "zone.js": "^0.8.16"
diff --git a/aio/yarn.lock b/aio/yarn.lock
index 25df18c206..3d6b27b27a 100644
--- a/aio/yarn.lock
+++ b/aio/yarn.lock
@@ -6549,7 +6549,13 @@ rx@2.3.24:
   version "2.3.24"
   resolved "https://registry.yarnpkg.com/rx/-/rx-2.3.24.tgz#14f950a4217d7e35daa71bbcbe58eff68ea4b2b7"
 
-rxjs@^5.2.0, rxjs@^5.4.2:
+rxjs@5.5.0-beta.7:
+  version "5.5.0-beta.7"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-5.5.0-beta.7.tgz#3bbb80b3b604938961d8a8cc5cc12b1aef52102e"
+  dependencies:
+    symbol-observable "^1.0.1"
+
+rxjs@^5.4.2:
   version "5.4.3"
   resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-5.4.3.tgz#0758cddee6033d68e0fd53676f0f3596ce3d483f"
   dependencies: