diff --git a/pkg/source/gdrive.go b/pkg/source/gdrive.go
index 4d3cb9f..c8e8ca1 100644
--- a/pkg/source/gdrive.go
+++ b/pkg/source/gdrive.go
@@ -196,9 +196,9 @@ func NewGDriveSource(ctx context.Context, opts ...GDriveOption) (*GDriveSource,
 		} else {
 			// Try service account if it wasn't a user config
 			if cfg.credsPath != "" {
-				srv, err = drive.NewService(ctx, option.WithCredentialsFile(cfg.credsPath))
+				srv, err = drive.NewService(ctx, option.WithAuthCredentialsFile(option.ServiceAccount, cfg.credsPath))
 			} else {
-				srv, err = drive.NewService(ctx, option.WithCredentialsJSON(b))
+				srv, err = drive.NewService(ctx, option.WithAuthCredentialsJSON(option.ServiceAccount, b))
 			}
 			if err != nil {
 				return nil, fmt.Errorf("create drive client (service account): %w", err)