diff --git a/lib/middleman-deploy/commands.rb b/lib/middleman-deploy/commands.rb
index 7ae34fb..614d164 100644
--- a/lib/middleman-deploy/commands.rb
+++ b/lib/middleman-deploy/commands.rb
@@ -1,5 +1,5 @@
 require 'middleman-core/cli'
-require 'middleman-core/rack'
+require 'middleman-core/rack' if Middleman::VERSION.to_i > 3
 require 'middleman-deploy/pkg-info'
 require 'middleman-deploy/extension'
 require 'middleman-deploy/methods'