diff --git a/Gemfile.lock b/Gemfile.lock
index d54e24d..cb39aa3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -55,6 +55,7 @@ GEM
       railties (>= 3.2, < 6.1)
     erubi (1.9.0)
     execjs (2.7.0)
+    ffi (1.12.2)
     ffi (1.12.2-x86-mingw32)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
@@ -69,13 +70,18 @@ GEM
       mini_mime (>= 0.1.1)
     method_source (0.9.2)
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.6.1)
     minitest (5.14.0)
     nio4r (2.5.2)
-    nokogiri (1.10.9-x86-mingw32)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
+    nokogiri (1.12.5-x86-mingw32)
+      racc (~> 1.4)
+    pg (0.19.0)
     pg (0.19.0-x86-mingw32)
     puma (3.12.4)
+    racc (1.5.2)
     rack (2.2.2)
     rack-proxy (0.6.5)
       rack
@@ -98,6 +104,11 @@ GEM
       nokogiri (>= 1.6)
     rails-html-sanitizer (1.3.0)
       loofah (~> 2.3)
+    rails_12factor (0.0.3)
+      rails_serve_static_assets
+      rails_stdout_logging
+    rails_serve_static_assets (0.0.5)
+    rails_stdout_logging (0.0.5)
     railties (5.1.7)
       actionpack (= 5.1.7)
       activesupport (= 5.1.7)
@@ -158,6 +169,7 @@ GEM
     websocket-extensions (0.1.4)
 
 PLATFORMS
+  ruby
   x86-mingw32
 
 DEPENDENCIES
@@ -167,6 +179,7 @@ DEPENDENCIES
   pg (~> 0.18)
   puma (~> 3.7)
   rails (~> 5.1.3)
+  rails_12factor
   react-rails
   sass-rails (~> 5.0)
   turbolinks (~> 5)