diff --git a/src/main/kotlin/org/mosad/thecitadelofricks/controller/CacheController.kt b/src/main/kotlin/org/mosad/thecitadelofricks/controller/CacheController.kt
index 5cc1a83..f0592fd 100644
--- a/src/main/kotlin/org/mosad/thecitadelofricks/controller/CacheController.kt
+++ b/src/main/kotlin/org/mosad/thecitadelofricks/controller/CacheController.kt
@@ -156,7 +156,7 @@ class CacheController {
          * this function updates the courseList
          * during the update process the old data will be returned for an API request
          */
-        private fun asyncUpdateCourseList() = GlobalScope.launch {
+        private fun asyncUpdateCourseList() = CoroutineScope(Dispatchers.IO).launch {
             CourseListParser().getCourseLinks(StartupController.courseListURL)?.let {
                 courseList = CoursesList(CoursesMeta(System.currentTimeMillis() / 1000, it.size), it.toSortedMap())
             }
@@ -172,7 +172,7 @@ class CacheController {
          * this function updates the mensa menu list
          * during the update process the old data will be returned for an API request
          */
-        private fun asyncUpdateMensa() = GlobalScope.launch {
+        private fun asyncUpdateMensa() = CoroutineScope(Dispatchers.IO).launch {
             val mensaCurrentWeek = MensaParser().getMensaMenu(StartupController.mensaMenuURL)
             val mensaNextWeek = MensaParser().getMensaMenu(MensaParser().getMenuLinkNextWeek(StartupController.mensaMenuURL))
 
@@ -189,7 +189,7 @@ class CacheController {
          * during the update process the old data will be returned for an API request
          * a FixedThreadPool is used to make parallel requests for faster updates
          */
-        private fun asyncUpdateTimetables() = GlobalScope.launch {
+        private fun asyncUpdateTimetables() = CoroutineScope(Dispatchers.IO).launch {
             logger.info("Updating ${timetableList.size} timetables ...")
 
             // create a new ThreadPool with 5 threads