diff --git a/Ruby/rails/demo/Gemfile.lock b/Ruby/rails/demo/Gemfile.lock
index 24d5573..c696aa7 100644
--- a/Ruby/rails/demo/Gemfile.lock
+++ b/Ruby/rails/demo/Gemfile.lock
@@ -77,6 +77,7 @@ GEM
     duktape (2.0.1.0)
     erubi (1.7.1)
     execjs (2.7.0)
+    ffi (1.9.25)
     ffi (1.9.25-x64-mingw32)
     globalid (0.4.1)
       activesupport (>= 4.2.0)
@@ -98,14 +99,17 @@ GEM
     mini_mime (1.0.1)
     mini_portile2 (2.3.0)
     minitest (5.11.3)
+    msgpack (1.2.4)
     msgpack (1.2.4-x64-mingw32)
     multi_json (1.13.1)
     nio4r (2.3.1)
+    nokogiri (1.8.5)
+      mini_portile2 (~> 2.3.0)
     nokogiri (1.8.5-x64-mingw32)
       mini_portile2 (~> 2.3.0)
     public_suffix (3.0.3)
     puma (3.12.0)
-    rack (2.0.6)
+    rack (2.0.8)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.2)
@@ -159,6 +163,7 @@ GEM
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
+    sqlite3 (1.3.13)
     sqlite3 (1.3.13-x64-mingw32)
     thor (0.20.3)
     thread_safe (0.3.6)
@@ -184,6 +189,7 @@ GEM
       nokogiri (~> 1.8)
 
 PLATFORMS
+  ruby
   x64-mingw32
 
 DEPENDENCIES