diff --git a/Gemfile b/Gemfile
index 763cb1e..500aed0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -52,7 +52,8 @@ gem 'cancancan'
 gem 'round_robin_tournament'
 gem 'rb-readline'
 gem 'delayed_job_active_record'
-gem 'puma'
+#gem 'puma'
+gem 'passenger'
 gem 'travis'
 
 group :development do
diff --git a/Procfile b/Procfile
index 2561a76..bc4cbfd 100644
--- a/Procfile
+++ b/Procfile
@@ -1,2 +1,3 @@
 worker: bundle exec rake jobs:work
-web: bundle exec puma -t 5:5 -p ${PORT:-3000} -e ${RACK_ENV:-development}
+#web: bundle exec puma -t 5:5 -p ${PORT:-3000} -e ${RACK_ENV:-development}
+web: bundle exec passenger start -p $PORT --max-pool-size 3
diff --git a/deploy/rails-prod-Dockerfile b/deploy/rails-prod-Dockerfile
index 90f448e..f204733 100644
--- a/deploy/rails-prod-Dockerfile
+++ b/deploy/rails-prod-Dockerfile
@@ -70,4 +70,5 @@ RUN RAILS_ENV=production bundle exec rake assets:precompile
 
 # By default, simply start puma.
 WORKDIR /rails
-CMD bundle exec puma -t 5:5 -b 'ssl://0.0.0.0:443?key=/ssl/server.key&verify_mode=none&cert=/ssl/server.crt'  -e production
+#CMD bundle exec puma -t 3:3 -b 'ssl://0.0.0.0:443?key=/ssl/server.key&verify_mode=none&cert=/ssl/server.crt'  -e production
+CMD bundle exec passenger start -p 443 --max-pool-size 3 --environment production --ssl --ssl-certificate /ssl/server.crt --ssl-certificate-key /ssl/server.key
\ No newline at end of file