1 files changed, 5 insertions, 0 deletions
diff --git a/git2d/x.h b/git2d/x.h
index 4be5186..92f7414 100644
--- a/git2d/x.h
+++ b/git2d/x.h
@@ -1,3 +1,8 @@
+/*-
+ * SPDX-License-Identifier: AGPL-3.0-only
+ * SPDX-FileCopyrightText: Copyright (c) 2025 Runxi Yu <https://runxiyu.org>
+ */
+
 #include <err.h>
 #include <errno.h>
 #include <git2.h>