diff --git a/.envrc b/.envrc
index 3550a30..4931e2f 100644
--- a/.envrc
+++ b/.envrc
@@ -1 +1,5 @@
+# SPDX-FileCopyrightText: 2025 Ethan Reece <contact@ethanreece.com>
+#
+# SPDX-License-Identifier: MIT
+
 use flake
diff --git a/.gitignore b/.gitignore
index 619c9ff..212281c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2025 Ethan Reece <contact@ethanreece.com>
+#
+# SPDX-License-Identifier: MIT
+
 .direnv
 .helix
 .pre-commit-config.yaml
diff --git a/LICENSES/MIT.txt b/LICENSES/MIT.txt
new file mode 100644
index 0000000..d817195
--- /dev/null
+++ b/LICENSES/MIT.txt
@@ -0,0 +1,18 @@
+MIT License
+
+Copyright (c) <year> <copyright holders>
+
+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/README.md b/README.md
index 20756a7..a681930 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,9 @@
+<!--
+SPDX-FileCopyrightText: 2025 Ethan Reece <contact@ethanreece.com>
+
+SPDX-License-Identifier: MIT
+-->
+
 # ❄️ Nix Flake template
 
 Template that automatically configures settings for language checking,
diff --git a/flake.lock b/flake.lock
index 9a1d5be..50c95c0 100644
--- a/flake.lock
+++ b/flake.lock
@@ -56,11 +56,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1752558218,
-        "narHash": "sha256-X429IFYAQYZGQFboq1Pz4qtU2XcD/avTHnJ+WEgiT7I=",
+        "lastModified": 1752566655,
+        "narHash": "sha256-w1Shlyy4dlAwtOb8NJ9XMs2FUD030WLgHWxOBQsh8bk=",
         "ref": "main",
-        "rev": "cb93b994031e290e44dabc7663d1f014bbf52c84",
-        "revCount": 4,
+        "rev": "193dbe8d030aa6784eae9acb211c4cfda404ed65",
+        "revCount": 11,
         "type": "git",
         "url": "https://git.sudoer777.dev/me/nix-flake-base.git"
       },
@@ -233,11 +233,11 @@
     },
     "nixpkgs_3": {
       "locked": {
-        "lastModified": 1752077645,
-        "narHash": "sha256-HM791ZQtXV93xtCY+ZxG1REzhQenSQO020cu6rHtAPk=",
+        "lastModified": 1752446735,
+        "narHash": "sha256-Nz2vtUEaRB/UjvPfuhHpez060P/4mvGpXW4JCDIboA4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "be9e214982e20b8310878ac2baa063a961c1bdf6",
+        "rev": "a421ac6595024edcfbb1ef950a3712b89161c359",
         "type": "github"
       },
       "original": {
diff --git a/flake.lock.license b/flake.lock.license
new file mode 100644
index 0000000..f0ef2a4
--- /dev/null
+++ b/flake.lock.license
@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2025 Ethan Reece <contact@ethanreece.com>
+
+SPDX-License-Identifier: MIT
diff --git a/flake.nix b/flake.nix
index b03425b..df2d50a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2025 Ethan Reece <contact@ethanreece.com>
+#
+# SPDX-License-Identifier: MIT
+
 {
   description = "Nix Flake template";
   inputs = {
@@ -63,6 +67,7 @@
             };
             devshells.default = {
               packages = [ pkgs.forgejo-cli ];
+              # reuse annotate -c "Ethan Reece <contact@ethanreece.com>" -l MIT -y 2025
               devshell = {
                 motd = ''
                   {202}󱄅 Nix Flake template{reset}