diff --git a/lib/travis/api/app/responders/service.rb b/lib/travis/api/app/responders/service.rb
index 5af8b8fe..bc775195 100644
--- a/lib/travis/api/app/responders/service.rb
+++ b/lib/travis/api/app/responders/service.rb
@@ -16,7 +16,7 @@ module Travis::Api::App::Responders
       def cache_control
         if final?
           mode = endpoint.public? ? :public : :private
-          endpoint.expires(31536000, mode, :must_revalidate) # 1 year
+          endpoint.expires(31536000, mode) # 1 year
         else
           # FIXME: Chrome WTF?
           endpoint.cache_control :no_cache
diff --git a/spec/unit/responders/service_spec.rb b/spec/unit/responders/service_spec.rb
new file mode 100644
index 00000000..5ee9412f
--- /dev/null
+++ b/spec/unit/responders/service_spec.rb
@@ -0,0 +1,21 @@
+require 'spec_helper'
+
+describe Travis::Api::App::Responders::Service do
+  class MyService < Travis::Api::App::Responders::Service
+  end
+
+  let(:endpoint) { stub 'endpoint', public?: true }
+  let(:resource) { stub 'resource', run: {} }
+  let(:options)  { {} }
+  let(:service)  { MyService.new(endpoint, resource, options) }
+
+  context 'with final resource' do
+    before { resource.expects(:final?).returns(true) }
+
+    it 'caches resource for a year' do
+      endpoint.expects(:expires).with(31536000, :public)
+      service.apply
+    end
+  end
+
+end