diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..548a1d0
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,15 @@
+Copyright (C) 2023 by 0x1eef <0x1eef@protonmail.com>
+
+Permission to use, copy, modify, and/or distribute this
+software for any purpose with or without fee is hereby
+granted.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS
+ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
+EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+OF THIS SOFTWARE.
diff --git a/README.md b/README.md
index b5c4171..7862081 100644
--- a/README.md
+++ b/README.md
@@ -24,3 +24,8 @@ into the `/usr/ports` directory by root.
 * [Source code (git.hardenedbsd.org)](https://git.hardenedbsd.org/0x1eef/portzap)
 * [Source code (GitHub)](https://github.com/0x1eef/portzap)
 * [Source code (GitLab)](https://gitlab.com/0x1eef/portzap)
+
+## License
+
+[BSD Zero Clause](https://choosealicense.com/licenses/0bsd/). <br>
+See [LICENSE](./LICENSE).