diff --git a/.Rbuildignore b/.Rbuildignore
index 5214b3a..dd996b7 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -1,3 +1,4 @@
+^LICENSE\.md$
 ^.*\.Rproj$
 ^\.Rproj\.user$
 ^\.travis\.yml$
diff --git a/DESCRIPTION b/DESCRIPTION
index 18c0128..f33d8f5 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -12,7 +12,7 @@ Description: The strided iterator adapts multidimensional buffers to work with
   These help authors to avoid integer-based indexing, which in some cases can impede
   algorithm performance and introduce indexing errors. This library exists
   primarily to expose the header file to other R projects.
-License: GPL (>= 2)
+License: MIT + file LICENSE
 Imports: Rcpp (>= 0.12.13)
 LinkingTo: Rcpp, BH
 Suggests: 
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..a234c71
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,2 @@
+YEAR: 2018
+COPYRIGHT HOLDER: Tim Keitt
diff --git a/LICENSE.md b/LICENSE.md
new file mode 100644
index 0000000..3007ca8
--- /dev/null
+++ b/LICENSE.md
@@ -0,0 +1,21 @@
+# MIT License
+
+Copyright (c) 2018 Tim Keitt
+
+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.