diff --git a/AndroidCompat/Config/src/main/java/xyz/nulldev/ts/config/ConfigModule.kt b/AndroidCompat/Config/src/main/java/xyz/nulldev/ts/config/ConfigModule.kt
index 3594059359..9005e51468 100644
--- a/AndroidCompat/Config/src/main/java/xyz/nulldev/ts/config/ConfigModule.kt
+++ b/AndroidCompat/Config/src/main/java/xyz/nulldev/ts/config/ConfigModule.kt
@@ -41,6 +41,7 @@ class SystemPropertyOverrideDelegate(val getConfig: () -> Config, val moduleName
         return when (T::class.simpleName) {
             "Int" -> combined.toInt()
             "Boolean" -> combined.toBoolean()
+            "Double" -> combined.toDouble()
             // add more types as needed
             else -> combined // covers String
         } as T
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/update/Updater.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/update/Updater.kt
index b45ab47058..06c6fbecc4 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/update/Updater.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/update/Updater.kt
@@ -21,7 +21,7 @@ import mu.KotlinLogging
 import org.kodein.di.DI
 import org.kodein.di.conf.global
 import org.kodein.di.instance
-import suwayomi.tachidesk.manga.controller.UpdateController
+import suwayomi.tachidesk.manga.impl.Category
 import suwayomi.tachidesk.manga.impl.CategoryManga
 import suwayomi.tachidesk.manga.impl.Chapter
 import suwayomi.tachidesk.manga.model.dataclass.CategoryDataClass
@@ -29,7 +29,11 @@ import suwayomi.tachidesk.manga.model.dataclass.IncludeInUpdate
 import suwayomi.tachidesk.manga.model.dataclass.MangaDataClass
 import suwayomi.tachidesk.manga.model.table.MangaStatus
 import suwayomi.tachidesk.server.serverConfig
+import java.util.Date
+import java.util.Timer
+import java.util.TimerTask
 import java.util.concurrent.ConcurrentHashMap
+import java.util.prefs.Preferences
 
 class Updater : IUpdater {
     private val logger = KotlinLogging.logger {}
@@ -43,6 +47,46 @@ class Updater : IUpdater {
 
     private val semaphore = Semaphore(serverConfig.maxParallelUpdateRequests)
 
+    private val lastAutomatedUpdateKey = "lastAutomatedUpdateKey"
+    private val preferences = Preferences.userNodeForPackage(Updater::class.java)
+
+    private val updateTimer = Timer()
+    private var currentUpdateTask: TimerTask? = null
+
+    init {
+        scheduleUpdateTask()
+    }
+
+    private fun scheduleUpdateTask() {
+        if (!serverConfig.automaticallyTriggerGlobalUpdate) {
+            return
+        }
+
+        val minInterval = 1000 * 60 * 60 * 6L // 6 hours
+        val intervalInMS = (serverConfig.globalUpdateInterval * 60 * 60 * 1000).toLong() // hours to ms
+        val updateInterval = intervalInMS.coerceAtLeast(minInterval)
+
+        val lastAutomatedUpdate = preferences.getLong(lastAutomatedUpdateKey, 0)
+        val initialDelay = updateInterval - (System.currentTimeMillis() - lastAutomatedUpdate) % updateInterval
+
+        currentUpdateTask?.cancel()
+        currentUpdateTask = object : TimerTask() {
+            override fun run() {
+                preferences.putLong(lastAutomatedUpdateKey, System.currentTimeMillis())
+
+                if (status.value.running) {
+                    logger.debug { "Global update is already in progress, do not trigger global update" }
+                    return
+                }
+
+                logger.info { "Trigger global update (interval= ${serverConfig.globalUpdateInterval}h, lastAutomatedUpdate= ${Date(lastAutomatedUpdate)})" }
+                addCategoriesToUpdateQueue(Category.getCategoryList(), true)
+            }
+        }
+
+        updateTimer.scheduleAtFixedRate(currentUpdateTask, initialDelay, updateInterval)
+    }
+
     private fun getOrCreateUpdateChannelFor(source: String): Channel<UpdateJob> {
         return updateChannels.getOrPut(source) {
             logger.debug { "getOrCreateUpdateChannelFor: created channel for $source - channels: ${updateChannels.size + 1}" }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/server/ServerConfig.kt b/server/src/main/kotlin/suwayomi/tachidesk/server/ServerConfig.kt
index 3a51645a8a..41e06fbdff 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/server/ServerConfig.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/server/ServerConfig.kt
@@ -38,6 +38,8 @@ class ServerConfig(getConfig: () -> Config, moduleName: String = MODULE_NAME) :
     var excludeUnreadChapters: Boolean by overridableConfig
     var excludeNotStarted: Boolean by overridableConfig
     var excludeCompleted: Boolean by overridableConfig
+    var automaticallyTriggerGlobalUpdate: Boolean by overridableConfig
+    var globalUpdateInterval: Double by overridableConfig
 
     // Authentication
     var basicAuthEnabled: Boolean by overridableConfig
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/server/ServerSetup.kt b/server/src/main/kotlin/suwayomi/tachidesk/server/ServerSetup.kt
index 5206528378..ffe96084a0 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/server/ServerSetup.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/server/ServerSetup.kt
@@ -66,10 +66,12 @@ fun applicationSetup() {
     // Application dirs
     val applicationDirs = ApplicationDirs()
 
+    val updater = Updater()
+
     DI.global.addImport(
         DI.Module("Server") {
             bind<ApplicationDirs>() with singleton { applicationDirs }
-            bind<IUpdater>() with singleton { Updater() }
+            bind<IUpdater>() with singleton { updater }
             bind<JsonMapper>() with singleton { JavalinJackson() }
             bind<Json>() with singleton { Json { ignoreUnknownKeys = true } }
         }
diff --git a/server/src/main/resources/server-reference.conf b/server/src/main/resources/server-reference.conf
index 4847a0ec04..f1cbb82ffa 100644
--- a/server/src/main/resources/server-reference.conf
+++ b/server/src/main/resources/server-reference.conf
@@ -23,6 +23,8 @@ server.maxParallelUpdateRequests = 10 # sets how many sources can be updated in
 server.excludeUnreadChapters = true
 server.excludeNotStarted = true
 server.excludeCompleted = true
+server.automaticallyTriggerGlobalUpdate = false
+server.globalUpdateInterval = 12 # time in hours (doesn't have to be full hours e.g. 12.5) - range: 6 <= n < ∞ - default: 12 hours - interval in which the global update will be automatically triggered
 
 # Authentication
 server.basicAuthEnabled = false
diff --git a/server/src/test/resources/server-reference.conf b/server/src/test/resources/server-reference.conf
index 324cde08d1..aedf9f2749 100644
--- a/server/src/test/resources/server-reference.conf
+++ b/server/src/test/resources/server-reference.conf
@@ -15,6 +15,8 @@ server.maxParallelUpdateRequests = 10
 server.excludeUnreadChapters = true
 server.excludeNotStarted = true
 server.excludeCompleted = true
+server.automaticallyTriggerGlobalUpdate = false
+server.globalUpdateInterval = 12
 
 # misc
 server.debugLogsEnabled = true