diff --git a/libs/lua-hash/src/hash.c b/libs/lua-hash/src/hash.c
index ce1d3fb..c6fd59b 100644
--- a/libs/lua-hash/src/hash.c
+++ b/libs/lua-hash/src/hash.c
@@ -1,3 +1,5 @@
+// SPDX-FileCopyrightText: 2016-2021 Leonardo Mörlein <git@irrelefant.net>
+// SPDX-License-Identifier: MIT License
 #include <libubox/md5.h>
 
 #include <lua.h>
diff --git a/libs/lua-hash/src/test.lua b/libs/lua-hash/src/test.lua
index 615a82f..c17bf13 100644
--- a/libs/lua-hash/src/test.lua
+++ b/libs/lua-hash/src/test.lua
@@ -1,3 +1,7 @@
 #!/usr/bin/lua
+
+-- SPDX-FileCopyrightText: 2016-2021 Leonardo Mörlein <git@irrelefant.net>
+-- SPDX-License-Identifier: MIT License
+
 hash = require "hash"
 assert(hash.md5('testing') == 'ae2b1fca515949e5d54fb22b8ed95575')