diff --git a/README.md b/README.md
index 8bf8426..8f82704 100644
--- a/README.md
+++ b/README.md
@@ -104,3 +104,7 @@ Each sub-directory is creating a section of the home page and all content files
 If a directory only contains an `index.md`, it will be rendered as normal content.
 If there are additional markdown files, those will be rendered as a flexbox column layout.
 An image gallery can be added by providing a list of `resources` in the front matter.
+
+## Open Source Code Used
+
+Source code of the [picocss/pico repo](https://github.com/picocss/pico) was either used directly or as a reference. It was licensed under the MIT license. A copy of the license can be found under: `licenses/picocss-pico_mit_license`.
diff --git a/licenses/picocss-pico_mit_license b/licenses/picocss-pico_mit_license
new file mode 100644
index 0000000..275ca7e
--- /dev/null
+++ b/licenses/picocss-pico_mit_license
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2019-2023 Pico
+
+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.