diff --git a/Ruby/rails/demo/Gemfile.lock b/Ruby/rails/demo/Gemfile.lock
index 24d5573..4417dc0 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)
@@ -94,13 +95,18 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     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)
@@ -159,6 +165,7 @@ 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)
@@ -166,7 +173,7 @@ GEM
     turbolinks (5.2.0)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     tzinfo-data (1.2018.7)
       tzinfo (>= 1.0.0)
@@ -184,6 +191,7 @@ GEM
       nokogiri (~> 1.8)
 
 PLATFORMS
+  ruby
   x64-mingw32
 
 DEPENDENCIES