diff --git a/YACReaderLibrary/db_helper.cpp b/YACReaderLibrary/db_helper.cpp
index 201a48da..ddde1866 100644
--- a/YACReaderLibrary/db_helper.cpp
+++ b/YACReaderLibrary/db_helper.cpp
@@ -753,6 +753,18 @@ void DBHelper::updateRead(ComicInfo *comicInfo, QSqlDatabase &db)
     updateComicInfo.exec();
 }
 
+void DBHelper::updateAdded(ComicInfo *comicInfo, QSqlDatabase &db)
+{
+    QSqlQuery updateComicInfo(db);
+    updateComicInfo.prepare("UPDATE comic_info SET "
+                            "added = :added"
+                            " WHERE id = :id ");
+
+    updateComicInfo.bindValue(":added", comicInfo->added);
+    updateComicInfo.bindValue(":id", comicInfo->id);
+    updateComicInfo.exec();
+}
+
 void DBHelper::update(const Folder &folder, QSqlDatabase &db)
 {
     QSqlQuery updateFolderInfo(db);
diff --git a/YACReaderLibrary/db_helper.h b/YACReaderLibrary/db_helper.h
index b5335ee7..5f0ace4c 100644
--- a/YACReaderLibrary/db_helper.h
+++ b/YACReaderLibrary/db_helper.h
@@ -65,6 +65,7 @@ public:
     static void update(ComicDB *comics, QSqlDatabase &db);
     static void update(ComicInfo *comicInfo, QSqlDatabase &db);
     static void updateRead(ComicInfo *comicInfo, QSqlDatabase &db);
+    static void updateAdded(ComicInfo *comicInfo, QSqlDatabase &db);
     static void update(const Folder &folder, QSqlDatabase &db); // only for finished/completed fields
     static void propagateFolderUpdatesToParent(const Folder &folder, QSqlDatabase &db);
     static Folder updateChildrenInfo(qulonglong folderId, QSqlDatabase &db);
diff --git a/YACReaderLibrary/library_creator.cpp b/YACReaderLibrary/library_creator.cpp
index fe8be708..ce9dd97f 100644
--- a/YACReaderLibrary/library_creator.cpp
+++ b/YACReaderLibrary/library_creator.cpp
@@ -594,6 +594,11 @@ void LibraryCreator::update(QDir dirS)
                                     QString path = QDir::cleanPath(fileInfoS.absoluteFilePath()).remove(_source);
 #endif
                                     replaceComic(path, fileInfoS, comicDB);
+                                } else if (added == 0) { // this file was added before `added` existed on the db, `added` will be updated to match the modified date so future modifications can be detected.
+                                    if (lastModified > 0) {
+                                        comicDB->info.added = lastModified;
+                                        DBHelper::updateAdded(&(comicDB->info), _database);
+                                    }
                                 }
                             }
                             i++;