diff --git a/Gemfile.lock b/Gemfile.lock
index bfe8bd1c6..ece5418b6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -314,7 +314,7 @@ GEM
     posix-spawn (0.3.8)
     protected_attributes (1.0.7)
       activemodel (>= 4.0.1, < 5.0)
-    puma (2.8.1)
+    puma (2.8.2)
       rack (>= 1.1, < 2.0)
     pygments.rb (0.5.4)
       posix-spawn (~> 0.3.6)
diff --git a/config/environments/production.rb b/config/environments/production.rb
index ff123a3df..ce0b0eebc 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -65,5 +65,9 @@ Rosa::Application.configure do
   # Precompile additional assets (application.js, application.css, and all non-JS/CSS are already added)
   config.assets.precompile += %w(login.css login.js reg_session.css tour.css tour.js gollum/editor/langs/*.js moment/ru.js)
 
+  # Compress JavaScripts and CSS.
+  config.assets.js_compressor = :uglifier
+  config.assets.css_compressor = :sass
+
   config.eager_load = true
 end
diff --git a/config/environments/staging.rb b/config/environments/staging.rb
index f5b7d0681..aee5535d7 100644
--- a/config/environments/staging.rb
+++ b/config/environments/staging.rb
@@ -64,6 +64,10 @@ Rosa::Application.configure do
   # Precompile additional assets (application.js, application.css, and all non-JS/CSS are already added)
   config.assets.precompile += %w(login.css login.js reg_session.css tour.css tour.js gollum/editor/langs/*.js moment/ru.js)
 
+  # Compress JavaScripts and CSS.
+  config.assets.js_compressor = :uglifier
+  config.assets.css_compressor = :sass
+
   config.eager_load = true
   config.log_redis = true
 end
diff --git a/config/routes.rb b/config/routes.rb
index 54e5e8797..d7b4e35d2 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -371,7 +371,7 @@ Rosa::Application.routes.draw do
           # Commit comments
           post '/commit/:commit_id/comments(.:format)' => "comments#create", as: :project_commit_comments
           get '/commit/:commit_id/comments/:id(.:format)' => "comments#edit", as: :edit_project_commit_comment
-          put '/commit/:commit_id/comments/:id(.:format)' => "comments#update", as: :project_commit_comment
+          patch '/commit/:commit_id/comments/:id(.:format)' => "comments#update", as: :project_commit_comment
           delete '/commit/:commit_id/comments/:id(.:format)' => "comments#destroy"
           get '/commit/:commit_id/add_line_comments(.:format)' => "comments#new_line", as: :new_line_commit_comment
           # Commit subscribes