diff --git a/spec/services/job_processor_spec.rb b/spec/services/job_processor_spec.rb
index 0044038ffe..041c80d5d4 100644
--- a/spec/services/job_processor_spec.rb
+++ b/spec/services/job_processor_spec.rb
@@ -1,5 +1,11 @@
 # frozen_string_literal: true
 
+# We need to configure MiniRacer to allow forking.
+# Otherwise this spec hangs on CI.
+# https://github.com/rubyjs/mini_racer#fork-safety
+require "mini_racer"
+MiniRacer::Platform.set_flags!(:single_threaded)
+
 require 'spec_helper'
 
 class TestJob < ActiveJob::Base