diff --git a/lib/cloudtasker/config.rb b/lib/cloudtasker/config.rb
index 0aabd11..5682b1a 100644
--- a/lib/cloudtasker/config.rb
+++ b/lib/cloudtasker/config.rb
@@ -236,7 +236,7 @@ def dispatch_deadline
     #
     def secret
       @secret ||= (
-        defined?(Rails) && Rails.application.credentials&.dig(:secret_key_base)
+        defined?(Rails) && Rails.application.secret_key_base
       ) || raise(StandardError, SECRET_MISSING_ERROR)
     end