diff --git a/lib/active_resource.rb b/lib/active_resource.rb
index 41e7af7886..8e4f34ecf4 100644
--- a/lib/active_resource.rb
+++ b/lib/active_resource.rb
@@ -47,7 +47,7 @@ module ActiveResource
   autoload :Validations
   autoload :Collection
 
-  if ActiveSupport::VERSION::STRING >= "7.2"
+  if ActiveSupport::VERSION::STRING >= "7.1"
     def self.deprecator
       @deprecator ||= ActiveSupport::Deprecation.new(VERSION::STRING, "ActiveResource")
     end