diff --git a/api/src/main/kotlin/com/ditto/api/config/SchedulingConfig.kt b/api/src/main/kotlin/com/ditto/api/config/SchedulingConfig.kt
index ffe5107c..c7cf58ed 100644
--- a/api/src/main/kotlin/com/ditto/api/config/SchedulingConfig.kt
+++ b/api/src/main/kotlin/com/ditto/api/config/SchedulingConfig.kt
@@ -1,10 +1,30 @@
 package com.ditto.api.config
 
+import org.springframework.boot.task.ThreadPoolTaskSchedulerBuilder
+import org.springframework.context.annotation.Bean
 import org.springframework.context.annotation.Configuration
 import org.springframework.context.annotation.Profile
 import org.springframework.scheduling.annotation.EnableScheduling
+import org.springframework.scheduling.annotation.SchedulingConfigurer
+import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler
+import org.springframework.scheduling.config.ScheduledTaskRegistrar
 
+/**
+ * WebSocket 설정이 `TaskScheduler` 빈을 따로 등록해서 Boot 자동설정의 `taskScheduler`가 만들어지지 않는다.
+ * 그러면 크론이 스레드 하나짜리 기본 실행기에서 돌고 `spring.task.scheduling` 설정도 먹지 않는다.
+ * 자동설정과 같은 빌더로 직접 만들어 그 설정을 따르게 한다.
+ */
 @Configuration
 @EnableScheduling
 @Profile("!test")
-class SchedulingConfig
+class SchedulingConfig(
+    private val taskSchedulerBuilder: ThreadPoolTaskSchedulerBuilder,
+) : SchedulingConfigurer {
+
+    override fun configureTasks(registrar: ScheduledTaskRegistrar) {
+        registrar.setTaskScheduler(cronTaskScheduler())
+    }
+
+    @Bean
+    fun cronTaskScheduler(): ThreadPoolTaskScheduler = taskSchedulerBuilder.build()
+}