diff --git a/packages/backend/src/boot/entry.ts b/packages/backend/src/boot/entry.ts
index 25375c3015..aef999b683 100644
--- a/packages/backend/src/boot/entry.ts
+++ b/packages/backend/src/boot/entry.ts
@@ -22,7 +22,7 @@ import 'reflect-metadata';
 process.title = `Misskey (${cluster.isPrimary ? 'master' : 'worker'})`;
 
 Error.stackTraceLimit = Infinity;
-EventEmitter.defaultMaxListeners = 128;
+EventEmitter.defaultMaxListeners = 512;
 
 const logger = new Logger('core', 'cyan');
 const clusterLogger = logger.createSubLogger('cluster', 'orange');