diff --git a/built_in_extensions.rb b/built_in_extensions.rb
index 2e13080..b82241b 100644
--- a/built_in_extensions.rb
+++ b/built_in_extensions.rb
@@ -1,6 +1,6 @@
 #built-in-modules
 gem 'archive', '0.0.1', :git => 'http://gitlab.tp.rulingcom.com/root/orbit-archive.git'
-gem 'announcement', '0.0.1', :git => 'http://gitlab.tp.rulingcom.com/root/orbit-announcement.git'
+gem 'announcement', '0.0.1', :git => 'http://gitlab.tp.rulingcom.com/root/orbit-announcement.git', :branch => 'ntu_osa'
 gem 'gallery', '0.0.1', :git => 'http://gitlab.tp.rulingcom.com/root/orbit-gallery.git'
 gem 'member', '0.0.1', :git => 'http://gitlab.tp.rulingcom.com/root/orbit-member.git'
 gem 'member_staff', '0.0.1', :git => 'http://gitlab.tp.rulingcom.com/root/orbit-memberstaff.git'
diff --git a/config/locales/ntu.en.yml b/config/locales/ntu.en.yml
new file mode 100644
index 0000000..24c7fef
--- /dev/null
+++ b/config/locales/ntu.en.yml
@@ -0,0 +1,4 @@
+en: 
+
+  ntu:
+    rss_origin: Back to NTU Announcements
diff --git a/config/locales/ntu.zh_tw.yml b/config/locales/ntu.zh_tw.yml
new file mode 100644
index 0000000..46ee607
--- /dev/null
+++ b/config/locales/ntu.zh_tw.yml
@@ -0,0 +1,4 @@
+zh_tw: 
+
+  ntu:
+    rss_origin: 回臺大校園公佈欄