diff --git a/.envrc.example b/.envrc.example
index 62bd92c..fa58188 100644
--- a/.envrc.example
+++ b/.envrc.example
@@ -1,2 +1,2 @@
-export TWITTER_KEY=key
-export TWITTER_SECRET=secret
+export GITHUB_KEY=[key]
+export GITHUB_SECRET=[secret]
diff --git a/Gemfile b/Gemfile
index a8c60a0..ac9ac88 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ gem "rails", "5.2.0"
 
 gem "dragonfly"
 gem "jquery-rails"
-gem "omniauth-twitter"
+gem "omniauth-github"
 gem "puma"
 gem "sass-rails"
 gem "simple_form"
diff --git a/Gemfile.lock b/Gemfile.lock
index 0b306a0..2287d54 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -70,6 +70,8 @@ GEM
       rack (>= 1.3)
     erubi (1.7.1)
     execjs (2.7.0)
+    faraday (0.12.2)
+      multipart-post (>= 1.2, < 3)
     ffi (1.9.25)
     globalid (0.4.1)
       activesupport (>= 4.2.0)
@@ -80,6 +82,7 @@ GEM
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
+    jwt (1.5.6)
     loofah (2.2.2)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
@@ -93,19 +96,26 @@ GEM
     mini_portile2 (2.3.0)
     minitest (5.11.3)
     multi_json (1.13.1)
+    multi_xml (0.6.0)
+    multipart-post (2.0.0)
     nio4r (2.3.1)
     nokogiri (1.8.4)
       mini_portile2 (~> 2.3.0)
-    oauth (0.5.4)
+    oauth2 (1.4.0)
+      faraday (>= 0.8, < 0.13)
+      jwt (~> 1.0)
+      multi_json (~> 1.3)
+      multi_xml (~> 0.5)
+      rack (>= 1.2, < 3)
     omniauth (1.8.1)
       hashie (>= 3.4.6, < 3.6.0)
       rack (>= 1.6.2, < 3)
-    omniauth-oauth (1.1.0)
-      oauth
-      omniauth (~> 1.0)
-    omniauth-twitter (1.4.0)
-      omniauth-oauth (~> 1.1)
-      rack
+    omniauth-github (1.3.0)
+      omniauth (~> 1.5)
+      omniauth-oauth2 (>= 1.4.0, < 2.0)
+    omniauth-oauth2 (1.5.0)
+      oauth2 (~> 1.1)
+      omniauth (~> 1.2)
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
@@ -206,7 +216,7 @@ DEPENDENCIES
   capybara
   dragonfly
   jquery-rails
-  omniauth-twitter
+  omniauth-github
   pry
   puma
   rails (= 5.2.0)
diff --git a/app/views/sessions/new.html.erb b/app/views/sessions/new.html.erb
index bdec0de..ab95a24 100644
--- a/app/views/sessions/new.html.erb
+++ b/app/views/sessions/new.html.erb
@@ -1 +1 @@
-<%= link_to 'Sign in with Twitter', '/auth/twitter' %>
+<%= link_to 'Sign in with GitHub', '/auth/github' %>
diff --git a/config/initializers/omniauth.rb b/config/initializers/omniauth.rb
index 05d79ed..90837ba 100644
--- a/config/initializers/omniauth.rb
+++ b/config/initializers/omniauth.rb
@@ -1,3 +1,3 @@
 Rails.application.config.middleware.use OmniAuth::Builder do
-  provider :twitter, ENV['TWITTER_KEY'], ENV['TWITTER_SECRET']
+  provider :github, ENV["GITHUB_KEY"], ENV["GITHUB_SECRET"]
 end
diff --git a/config/routes.rb b/config/routes.rb
index 269dce7..a55324a 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,62 +1,10 @@
 MyImages::Application.routes.draw do
-  # The priority is based upon order of creation: first created -> highest priority.
-  # See how all your routes lay out with "rake routes".
+  root "home#index"
 
-  root 'home#index'
-
-  resource :session, only: [:new, :destroy]
-  get '/auth/:provider/callback', to: 'sessions#create', as: :create_session
+  resource :session, only: %i[new destroy]
+  get "/auth/:provider/callback", to: "sessions#create", as: :create_session
 
   resource :user do
     resources :images
   end
-
-  # Example of regular route:
-  #   get 'products/:id' => 'catalog#view'
-
-  # Example of named route that can be invoked with purchase_url(id: product.id)
-  #   get 'products/:id/purchase' => 'catalog#purchase', as: :purchase
-
-  # Example resource route (maps HTTP verbs to controller actions automatically):
-  #   resources :products
-
-  # Example resource route with options:
-  #   resources :products do
-  #     member do
-  #       get 'short'
-  #       post 'toggle'
-  #     end
-  #
-  #     collection do
-  #       get 'sold'
-  #     end
-  #   end
-
-  # Example resource route with sub-resources:
-  #   resources :products do
-  #     resources :comments, :sales
-  #     resource :seller
-  #   end
-
-  # Example resource route with more complex sub-resources:
-  #   resources :products do
-  #     resources :comments
-  #     resources :sales do
-  #       get 'recent', on: :collection
-  #     end
-  #   end
-
-  # Example resource route with concerns:
-  #   concern :toggleable do
-  #     post 'toggle'
-  #   end
-  #   resources :posts, concerns: :toggleable
-  #   resources :photos, concerns: :toggleable
-
-  # Example resource route within a namespace:
-  #   namespace :admin do
-  #     # Directs /admin/products/* to Admin::ProductsController
-  #     # (app/controllers/admin/products_controller.rb)
-  #     resources :products
-  #   end
 end