diff --git a/packages/backend/src/queue/processors/InboxProcessorService.ts b/packages/backend/src/queue/processors/InboxProcessorService.ts
index 4cae799219..a98e37376a 100644
--- a/packages/backend/src/queue/processors/InboxProcessorService.ts
+++ b/packages/backend/src/queue/processors/InboxProcessorService.ts
@@ -43,7 +43,7 @@ const mIncomingApProcessingTime = metricHistogram({
 	name: 'misskey_incoming_ap_processing_time',
 	help: 'Incoming AP processing time in seconds',
 	labelNames: ['incoming_host', 'incoming_type', 'success'],
-	buckets: [0.01, 0.1, 0.5, 1, 5, 10, 30, 60, 300, 1800],
+	buckets: [1, 10, 60, 300, 1800],
 });
 
 const mIncomingApEvent = metricCounter({