diff --git a/Bai09-VietUngDungDauTienRoR/app1/Gemfile.lock b/Bai09-VietUngDungDauTienRoR/app1/Gemfile.lock
index 64d701e..3439888 100644
--- a/Bai09-VietUngDungDauTienRoR/app1/Gemfile.lock
+++ b/Bai09-VietUngDungDauTienRoR/app1/Gemfile.lock
@@ -45,6 +45,7 @@ GEM
       autoprefixer-rails (>= 5.2.1)
       sass (>= 3.3.4)
     builder (3.2.2)
+    byebug (11.1.3)
     coffee-rails (4.2.1)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0, < 5.2.x)
@@ -79,10 +80,12 @@ GEM
     minitest (5.9.1)
     multi_json (1.12.1)
     nio4r (1.2.1)
+    nokogiri (1.6.8.1)
+      mini_portile2 (~> 2.1.0)
     nokogiri (1.6.8.1-x86-mingw32)
       mini_portile2 (~> 2.1.0)
     puma (3.6.0)
-    rack (2.0.1)
+    rack (2.2.6.2)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.0.1)
@@ -123,6 +126,7 @@ GEM
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
+    sqlite3 (1.3.12)
     sqlite3 (1.3.12-x86-mingw32)
     thor (0.19.1)
     thread_safe (0.3.5)
@@ -146,6 +150,7 @@ GEM
     websocket-extensions (0.1.2)
 
 PLATFORMS
+  ruby
   x86-mingw32
 
 DEPENDENCIES