README.md in red-arrow-0.3.1 vs README.md in red-arrow-0.4.0

- old
+ new

@@ -18,10 +18,10 @@
 
 gobject-introspection gem is a Ruby bindings of GObject Introspection. Red Arrow uses GObject Introspection via gobject-introspection gem.
 
 ## Install
 
-Install Arrow GLib before install Red Arrow. Use [Apache Arrow packages](https://github.com/kou/arrow-packages) for installing Arrow GLib.
+Install Arrow GLib before install Red Arrow. Use [Apache Arrow packages](https://github.com/red-data-tools/arrow-packages) for installing Arrow GLib.
 
 Install Red Arrow after you install Arrow GLib:
 
 ```text
 % gem install red-arrow