diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateNotifier.kt b/app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateNotifier.kt
index d917161a3d..766ddf2f14 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateNotifier.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateNotifier.kt
@@ -28,6 +28,7 @@ import eu.kanade.tachiyomi.util.system.notificationBuilder
 import eu.kanade.tachiyomi.util.system.notificationManager
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
+import okhttp3.internal.toImmutableMap
 import uy.kohesive.injekt.injectLazy
 import java.util.ArrayList
 
@@ -121,7 +122,9 @@ class LibraryUpdateNotifier(private val context: Context) {
      *
      * @param updates a list of manga with new updates.
      */
-    fun showResultNotification(updates: Map<LibraryManga, Array<Chapter>>) {
+    fun showResultNotification(newUpdates: Map<LibraryManga, Array<Chapter>>) {
+        // create a copy of the list since it will be cleared by the time it is used
+        val updates = newUpdates.toImmutableMap()
         GlobalScope.launch {
             val notifications = ArrayList<Pair<Notification, Int>>()
             updates.forEach {