diff --git a/COPYRIGHT b/COPYRIGHT
new file mode 100644
index 0000000..39e6a3b
--- /dev/null
+++ b/COPYRIGHT
@@ -0,0 +1 @@
+This library is dual-licensed under Apache 2.0 and MIT terms.
diff --git a/LICENSE-APACHE b/LICENSE-APACHE
new file mode 100644
index 0000000..324ca36
--- /dev/null
+++ b/LICENSE-APACHE
@@ -0,0 +1,15 @@
+APACHE License
+
+Copyright 2018 Protocol Labs, Inc
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
\ No newline at end of file
diff --git a/LICENSE-MIT b/LICENSE-MIT
new file mode 100644
index 0000000..5b0bba3
--- /dev/null
+++ b/LICENSE-MIT
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright 2018 Protocol Labs, Inc
+
+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.