diff --git a/LICENSE b/LICENSE-APACHE
similarity index 100%
rename from LICENSE
rename to LICENSE-APACHE
diff --git a/LICENSE-MIT b/LICENSE-MIT
new file mode 100644
index 0000000..31aa793
--- /dev/null
+++ b/LICENSE-MIT
@@ -0,0 +1,23 @@
+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 b85094f..4d7ae54 100644
--- a/README.md
+++ b/README.md
@@ -150,3 +150,18 @@ invaluable feedback. Rémy Oudompheng first implemented a fast path we use in th
The library includes code adapted from Google Wuffs (written by Nigel Tao) which was originally published
under the Apache 2.0 license.
+
+## License
+
+
+Licensed under either of Apache License, Version
+2.0 or MIT license at your option.
+
+
+
+
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in this repository by you, as defined in the Apache-2.0 license,
+shall be dual licensed as above, without any additional terms or conditions.
+