diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..a21eeea
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2023 Daniel "TQ" Hirsch <thequux@thequux.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/src/handler.rs b/src/handler.rs
index f56592c..1572784 100644
--- a/src/handler.rs
+++ b/src/handler.rs
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT
 use std::net::{IpAddr, Ipv4Addr, SocketAddr};
 use std::future::Future;
 use std::path::{Path, PathBuf};
diff --git a/src/main.rs b/src/main.rs
index 3354ac6..1b39e61 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT
 use std::ffi::c_void;
 use std::net;
 use std::net::{Ipv4Addr, Ipv6Addr};