diff --git a/lib/mrsk.rb b/lib/mrsk.rb
index 19b86051..70cbad40 100644
--- a/lib/mrsk.rb
+++ b/lib/mrsk.rb
@@ -1,6 +1,7 @@
 module Mrsk
 end
 
+require "active_support"
 require "zeitwerk"
 
 loader = Zeitwerk::Loader.for_gem