diff --git a/core/lib/spree/testing_support/common_rake.rb b/core/lib/spree/testing_support/common_rake.rb
index 566e2c66a54..c7480336317 100644
--- a/core/lib/spree/testing_support/common_rake.rb
+++ b/core/lib/spree/testing_support/common_rake.rb
@@ -24,7 +24,10 @@
     begin
       require "generators/#{ENV['LIB_NAME']}/install/install_generator"
       puts 'Running extension installation generator...'
-      "#{ENV['LIB_NAMESPACE'] || ENV['LIB_NAME'].camelize}::Generators::InstallGenerator".constantize.start(["--auto-run-migrations"])
+
+      # "#{ENV['LIB_NAMESPACE'] || ENV['LIB_NAME'].camelize}::Generators::InstallGenerator".constantize.start(["--auto-run-migrations"])
+
+      sh "bin/rails generate #{ENV['LIB_NAMESPACE']&.underscore || ENV['LIB_NAME']}:install --auto-run-migrations"
     rescue LoadError
       # No extension generator to run
     end