diff --git a/frameworks/Ruby/rails/config/puma.rb b/frameworks/Ruby/rails/config/puma.rb
index b513db258e6..7a8e1da62e5 100644
--- a/frameworks/Ruby/rails/config/puma.rb
+++ b/frameworks/Ruby/rails/config/puma.rb
@@ -30,9 +30,6 @@
 # Specifies the `port` that Puma will listen on to receive requests; default is 3000.
 port ENV.fetch("PORT", 3000)
 
-tuned_num_workers, tuned_num_threads = auto_tune
-workers tuned_num_workers
-
 # Allow puma to be restarted by `bin/rails restart` command.
 plugin :tmp_restart
 
diff --git a/frameworks/Ruby/rails/rails-mysql.dockerfile b/frameworks/Ruby/rails/rails-mysql.dockerfile
index 9e7083a1f4d..8ffbccc1b49 100644
--- a/frameworks/Ruby/rails/rails-mysql.dockerfile
+++ b/frameworks/Ruby/rails/rails-mysql.dockerfile
@@ -20,6 +20,7 @@ RUN bundle install --jobs=8
 
 COPY . /rails/
 
+ENV WEB_CONCURRENCY=auto
 ENV RAILS_ENV=production_mysql
 ENV PORT=8080
 ENV REDIS_URL=redis://localhost:6379/0
diff --git a/frameworks/Ruby/rails/rails.dockerfile b/frameworks/Ruby/rails/rails.dockerfile
index 451a4e5bfac..f35d50b8e0e 100644
--- a/frameworks/Ruby/rails/rails.dockerfile
+++ b/frameworks/Ruby/rails/rails.dockerfile
@@ -20,6 +20,7 @@ RUN bundle install --jobs=8
 
 COPY . /rails/
 
+ENV WEB_CONCURRENCY=auto
 ENV RAILS_ENV=production_postgresql
 ENV PORT=8080
 ENV REDIS_URL=redis://localhost:6379/0