diff --git a/package-overrides/npm/@reactivex/rxjs@5.0.0-alpha.2.json b/package-overrides/npm/@reactivex/rxjs@5.0.0-alpha.2.json
new file mode 100644
index 0000000..2f27c32
--- /dev/null
+++ b/package-overrides/npm/@reactivex/rxjs@5.0.0-alpha.2.json
@@ -0,0 +1,3 @@
+{
+  "format": "cjs"
+}