diff --git a/lib/stimulus_reflex/installer.rb b/lib/stimulus_reflex/installer.rb
index 70b33b4f..1c6ae73a 100644
--- a/lib/stimulus_reflex/installer.rb
+++ b/lib/stimulus_reflex/installer.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require "thor"
+
 module StimulusReflex
   class Installer
     include Thor::Base