diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7cf728ffb..29f65c584 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,7 @@ The format is a modified version of [Keep a Changelog](https://keepachangelog.co
 - Reword download reindexing message to avoid confusion ([@MajorTanya](https://github.com/MajorTanya)) ([#2874](https://github.com/mihonapp/mihon/pull/2874))
 - Rework internals for better performance ([@Lolle2000la](https://github.com/Lolle2000la)) ([#2955](https://github.com/mihonapp/mihon/pull/2955))
 - Optimize tracked library filter ([@NarwhalHorns](https://github.com/NarwhalHorns)) ([#2977](https://github.com/mihonapp/mihon/pull/2977))
+- Utilize tracker for library duplicate detection ([@NarwhalHorns](https://github.com/NarwhalHorns)) ([#2977](https://github.com/mihonapp/mihon/pull/2978))
 
 ### Changed
 - Update tracker icons ([@AntsyLich](https://github.com/AntsyLich)) ([#2773](https://github.com/mihonapp/mihon/pull/2773))
diff --git a/data/src/main/sqldelight/tachiyomi/data/manga_sync.sq b/data/src/main/sqldelight/tachiyomi/data/manga_sync.sq
index 44fa0570b..d5d9799dc 100644
--- a/data/src/main/sqldelight/tachiyomi/data/manga_sync.sq
+++ b/data/src/main/sqldelight/tachiyomi/data/manga_sync.sq
@@ -20,6 +20,9 @@ CREATE TABLE manga_sync(
     ON DELETE CASCADE
 );
 
+-- KMK: index for mangas.sq: getDuplicateLibraryManga's track_dupes
+CREATE INDEX idx_manga_sync_sync_id_remote_id ON manga_sync(sync_id, remote_id, manga_id);
+
 delete:
 DELETE FROM manga_sync
 WHERE manga_id = :mangaId AND sync_id = :syncId;
diff --git a/data/src/main/sqldelight/tachiyomi/data/mangas.sq b/data/src/main/sqldelight/tachiyomi/data/mangas.sq
index bf04d800e..d543b6690 100644
--- a/data/src/main/sqldelight/tachiyomi/data/mangas.sq
+++ b/data/src/main/sqldelight/tachiyomi/data/mangas.sq
@@ -119,12 +119,23 @@ AND source = :sourceId;
 
 getDuplicateLibraryManga:
 WITH
+track_dupes AS (
+    SELECT DISTINCT S2.manga_id
+    FROM manga_sync S1
+    INNER JOIN manga_sync S2
+    ON S1.sync_id = S2.sync_id
+    AND S1.remote_id = S2.remote_id
+    AND S1.manga_id != S2.manga_id
+    WHERE S1.manga_id = :id
+),
 duplicates AS (
-    SELECT *
-    FROM mangas
+    SELECT M.*
+    FROM mangas M
+    LEFT JOIN track_dupes D
+    ON D.manga_id = _id
     WHERE favorite = 1
     AND _id != :id
-    AND lower(title) LIKE '%' || lower(:title) || '%'
+    AND (lower(title) LIKE '%' || lower(:title) || '%' OR D.manga_id IS NOT NULL)
 ),
 chapter_counts AS (
     SELECT
diff --git a/data/src/main/sqldelight/tachiyomi/migrations/45.sqm b/data/src/main/sqldelight/tachiyomi/migrations/45.sqm
index 2614232b4..56b845447 100644
--- a/data/src/main/sqldelight/tachiyomi/migrations/45.sqm
+++ b/data/src/main/sqldelight/tachiyomi/migrations/45.sqm
@@ -7,3 +7,5 @@ CREATE INDEX IF NOT EXISTS idx_mangas_categories_category_id ON mangas_categorie
 DROP INDEX IF EXISTS excluded_scanlators_manga_id_index;
 CREATE INDEX IF NOT EXISTS idx_excluded_scanlators_manga_id_scanlator ON excluded_scanlators(manga_id, scanlator);
 CREATE INDEX IF NOT EXISTS idx_history_last_read ON history(last_read) WHERE last_read > 0;
+
+CREATE INDEX IF NOT EXISTS idx_manga_sync_sync_id_remote_id ON manga_sync(sync_id, remote_id, manga_id);