diff --git a/app/views/ci/builds/_stage.json.jbuilder b/app/views/ci/builds/_stage.json.jbuilder
index 256f81e77..57c68bf63 100644
--- a/app/views/ci/builds/_stage.json.jbuilder
+++ b/app/views/ci/builds/_stage.json.jbuilder
@@ -14,6 +14,7 @@ json.started format_utc_time(stage.stage_started)
 json.stopped format_utc_time(stage.stage_stopped)
 json.created format_utc_time(stage.stage_created)
 json.updated format_utc_time(stage.stage_updated)
+json.duration_time render_duartion_time(stage.stage_started, stage.stage_stopped)
 json.version stage.stage_version
 json.on_success stage.stage_on_success
 json.on_failure stage.stage_on_failure
diff --git a/app/views/ci/builds/_step.json.jbuilder b/app/views/ci/builds/_step.json.jbuilder
index 93b1353fc..970149d89 100644
--- a/app/views/ci/builds/_step.json.jbuilder
+++ b/app/views/ci/builds/_step.json.jbuilder
@@ -5,4 +5,5 @@ json.status step.step_status
 json.exit_code step.step_exit_code
 json.started format_utc_time(step.step_started)
 json.stopped format_utc_time(step.step_stopped)
+json.duration_time render_duartion_time(step.step_started, step.step_stopped)
 json.version step.step_version