diff --git a/lib/solidus_support/engine_extensions.rb b/lib/solidus_support/engine_extensions.rb
index 78343ca..c3375da 100644
--- a/lib/solidus_support/engine_extensions.rb
+++ b/lib/solidus_support/engine_extensions.rb
@@ -36,7 +36,12 @@ def load_solidus_subscribers_from(path)
           path.glob("**/*_subscriber.rb") do |subscriber_path|
             require_dependency(subscriber_path)
           end
-          Spree::Event.subscribers.each(&:subscribe!)
+
+          if Spree::Event.respond_to?(:activate_all_subscribers)
+            Spree::Event.activate_all_subscribers
+          else
+            Spree::Event.subscribers.each(&:subscribe!)
+          end
         end
       end