diff --git a/module-server/src/main/kotlin/de/twomartens/timetable/configuration/ThreadPoolTaskExecutorConfig.kt b/module-server/src/main/kotlin/de/twomartens/timetable/configuration/ThreadPoolTaskExecutorConfig.kt
index 667ce73..8481538 100644
--- a/module-server/src/main/kotlin/de/twomartens/timetable/configuration/ThreadPoolTaskExecutorConfig.kt
+++ b/module-server/src/main/kotlin/de/twomartens/timetable/configuration/ThreadPoolTaskExecutorConfig.kt
@@ -12,6 +12,7 @@ open class ThreadPoolTaskExecutorConfig {
     open fun threadPoolTaskExecutor(): ThreadPoolTaskExecutor {
         val executor = ThreadPoolTaskExecutor()
         executor.corePoolSize = CORE_POOL_SIZE
+        executor.maxPoolSize = CORE_POOL_SIZE
         return executor
     }
 }
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