diff --git a/module-server/src/main/kotlin/de/twomartens/timetable/configuration/ThreadPoolTaskSchedulerConfig.kt b/module-server/src/main/kotlin/de/twomartens/timetable/configuration/ThreadPoolTaskSchedulerConfig.kt
index 555ebfa..c18d3ce 100644
--- a/module-server/src/main/kotlin/de/twomartens/timetable/configuration/ThreadPoolTaskSchedulerConfig.kt
+++ b/module-server/src/main/kotlin/de/twomartens/timetable/configuration/ThreadPoolTaskSchedulerConfig.kt
@@ -4,7 +4,7 @@ import org.springframework.context.annotation.Bean
 import org.springframework.context.annotation.Configuration
 import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler
 
-private const val POOL_SIZE = 5
+private const val POOL_SIZE = 1
 
 private const val THREAD_NAME_PREFIX = "ThreadPoolTaskScheduler"