diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000000000000000000000000000000000000..eb8d6224b205987741dc64b60939a1f841380275
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,19 @@
+Copyright 2019 card10-firmware contributors
+
+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 f1e790c094f44a6eaa8a2081bfb8672a323d4781..1097e464c6a623825d2026bc03d1cc19da6a7c13 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,10 @@ Flasing with or without a debugger is described in detail in [How To Flash](http
 ## Debugger
 If you have a debugger, head over to our [Debugger](https://firmware.card10.badge.events.ccc.de/debugger.html) page to learn how to use it.
 
+# License
+
+Unless otherwise noted in a file, the contents of this repository are licensed under the MIT license. See [COPYING](COPYING) for more details.
+
 ---
 
 # Old README Contents: