diff --git a/staging/src/k8s.io/component-base/metrics/prometheus/slis/metrics.go b/staging/src/k8s.io/component-base/metrics/prometheus/slis/metrics.go
index d3dc546c754..3741e8d3d9b 100644
--- a/staging/src/k8s.io/component-base/metrics/prometheus/slis/metrics.go
+++ b/staging/src/k8s.io/component-base/metrics/prometheus/slis/metrics.go
@@ -55,6 +55,7 @@ var (
 func Register(registry k8smetrics.KubeRegistry) {
 	registry.Register(healthcheck)
 	registry.Register(healthchecksTotal)
+	_ = k8smetrics.RegisterProcessStartTime(registry.Register)
 }
 
 func ResetHealthMetrics() {