diff --git a/railties/lib/rails/generators/rails/app/templates/config/puma.rb.tt b/railties/lib/rails/generators/rails/app/templates/config/puma.rb.tt
index 649253aeca8d36e6a1532e69a2e660a4dddb0ffe..5ed44377449e9c5102f0ac5ab01c646097886a70 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/puma.rb.tt
+++ b/railties/lib/rails/generators/rails/app/templates/config/puma.rb.tt
@@ -16,6 +16,9 @@ port        ENV.fetch("PORT") { 3000 }
 #
 environment ENV.fetch("RAILS_ENV") { "development" }
 
+# Specifies the `pidfile` that Puma will use.
+pidfile ENV.fetch("PIDFILE") { "tmp/pids/server.pid" }
+
 # Specifies the number of `workers` to boot in clustered mode.
 # Workers are forked web server processes. If using threads and workers together
 # the concurrency of the application would be max `threads` * `workers`.