diff --git a/lib/webpacker/dev_server.rb b/lib/webpacker/dev_server.rb
index d9dae3447..c002ec5a7 100644
--- a/lib/webpacker/dev_server.rb
+++ b/lib/webpacker/dev_server.rb
@@ -13,7 +13,7 @@ def initialize(config)
 
   def running?
     if config.dev_server.present?
-      Socket.tcp(host, port, connect_timeout: connect_timeout).close
+      Timeout.timeout(connect_timeout) { Socket.tcp(host, port).close }
       true
     else
       false
diff --git a/lib/webpacker/dev_server_runner.rb b/lib/webpacker/dev_server_runner.rb
index 0ce83623c..b709be868 100644
--- a/lib/webpacker/dev_server_runner.rb
+++ b/lib/webpacker/dev_server_runner.rb
@@ -1,5 +1,6 @@
 require "shellwords"
 require "socket"
+require "timeout"
 require "webpacker/configuration"
 require "webpacker/dev_server"
 require "webpacker/runner"