diff --git a/vllm/v1/metrics/loggers.py b/vllm/v1/metrics/loggers.py
index 21280b9c84cf2..cb36e7973650e 100644
--- a/vllm/v1/metrics/loggers.py
+++ b/vllm/v1/metrics/loggers.py
@@ -494,6 +494,7 @@ class PrometheusStatLogger(AggregateStatLoggerBase):
         gauge_kv_cache_usage = self._gauge_cls(
             name="vllm:kv_cache_usage_perc",
             documentation="KV-cache usage. 1 means 100 percent usage.",
+            multiprocess_mode="mostrecent",
             labelnames=labelnames,
         )
         self.gauge_kv_cache_usage = make_per_engine(