diff --git a/lib/gitlab/sidekiq_middleware/arguments_logger.rb b/lib/gitlab/sidekiq_middleware/arguments_logger.rb
index 7813091ec7b..82a59a7a87e 100644
--- a/lib/gitlab/sidekiq_middleware/arguments_logger.rb
+++ b/lib/gitlab/sidekiq_middleware/arguments_logger.rb
@@ -2,7 +2,7 @@ module Gitlab
   module SidekiqMiddleware
     class ArgumentsLogger
       def call(worker, job, queue)
-        Sidekiq.logger.info "arguments: #{job['args']}"
+        Sidekiq.logger.info "arguments: #{JSON.dump(job['args'])}"
         yield
       end
     end