diff --git a/lib/copycopter_client/process_guard.rb b/lib/copycopter_client/process_guard.rb
index d8d2a45..34db53f 100644
--- a/lib/copycopter_client/process_guard.rb
+++ b/lib/copycopter_client/process_guard.rb
@@ -30,7 +30,12 @@ def start_polling
     end
 
     def spawner?
-      passenger_spawner? || unicorn_spawner?
+      return false if ENV['COPYCOPTER_OFF']
+      puma_spawner? || passenger_spawner? || unicorn_spawner?
+    end
+
+    def puma_spawner?
+      $0.include?('puma')
     end
 
     def passenger_spawner?
@@ -42,13 +47,28 @@ def unicorn_spawner?
     end
 
     def register_spawn_hooks
-      if defined?(PhusionPassenger)
+      if defined?(Puma::Cluster)
+        register_puma_hook
+      elsif defined?(PhusionPassenger)
         register_passenger_hook
       elsif defined?(Unicorn::HttpServer)
         register_unicorn_hook
       end
     end
 
+    def register_puma_hook
+      @logger.info("Registered Puma fork hook")
+      poller = @poller
+
+      Puma::Cluster.class_eval do
+        alias_method :worker_without_copycopter, :worker
+        define_method :worker do |index, master|
+          poller.start
+          worker_without_copycopter(index, master)
+        end
+      end
+    end
+
     def register_passenger_hook
       @logger.info("Registered Phusion Passenger fork hook")
       PhusionPassenger.on_event(:starting_worker_process) do |forked|