diff --git a/libs/bump_allocator/src/lib.rs b/libs/bump_allocator/src/lib.rs
index 90ffe374..506d9975 100644
--- a/libs/bump_allocator/src/lib.rs
+++ b/libs/bump_allocator/src/lib.rs
@@ -1,3 +1,12 @@
+// Copyright 2016 Philipp Oppermann. See the README.md
+// file at the top-level directory of this distribution.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
 #![feature(const_fn)]
 #![feature(allocator)]
 
diff --git a/libs/hole_list_allocator/src/lib.rs b/libs/hole_list_allocator/src/lib.rs
index 332e11d4..edad9e96 100644
--- a/libs/hole_list_allocator/src/lib.rs
+++ b/libs/hole_list_allocator/src/lib.rs
@@ -1,3 +1,12 @@
+// Copyright 2016 Philipp Oppermann. See the README.md
+// file at the top-level directory of this distribution.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
 #![feature(allocator)]
 #![feature(const_fn)]