diff --git a/internal/notice/repository.go b/internal/notice/repository.go
index 6a4aa27..8d34bea 100644
--- a/internal/notice/repository.go
+++ b/internal/notice/repository.go
@@ -34,7 +34,11 @@ type noticeRepository struct {
 // NewRepository creates a new notice repository
 func NewRepository(mongoManager *orm.ConnectionManager, logger logger.Logger) Repository {
 	// Create indexes for notices collection
-	noticeIndexes := []orm.Index{}
+	noticeIndexes := []orm.Index{
+		// processing_metadata.processed
+		*orm.NewIndex("processing_metadata_processed_idx", bson.D{{Key: "processing_metadata.processed", Value: 1}}),
+		*orm.NewIndex("main_classification_idx", bson.D{{Key: "main_classification", Value: 1}}),
+	}
 
 	// Create indexes
 	if err := mongoManager.CreateIndexes(collectionName(), noticeIndexes); err != nil {