diff --git a/chapter_09/package.json b/chapter_09/package.json
index 320d52b..989dd41 100644
--- a/chapter_09/package.json
+++ b/chapter_09/package.json
@@ -23,7 +23,7 @@
   "dependencies": {
     "@angular/common":  "2.0.0-rc.1",
     "@angular/compiler":  "2.0.0-rc.1",
-    "@angular/core":  "2.0.0-rc.1",
+    "@angular/core":  "10.2.5",
     "@angular/http":  "2.0.0-rc.1",
     "@angular/platform-browser":  "2.0.0-rc.1",
     "@angular/platform-browser-dynamic":  "2.0.0-rc.1",