diff --git a/README.md b/README.md
index 9561a96..e8c56d2 100644
--- a/README.md
+++ b/README.md
@@ -123,3 +123,12 @@ returned.
 API
 ---
 <http://godoc.org/github.com/gorhill/cronexpr>
+
+License
+-------
+
+License: pick the one which suits you best:
+
+- GPL v3 see <https://www.gnu.org/licenses/gpl.html>
+- APL v2 see <http://www.apache.org/licenses/LICENSE-2.0>
+
diff --git a/cronexpr.go b/cronexpr.go
index bad9553..58b518f 100644
--- a/cronexpr.go
+++ b/cronexpr.go
@@ -4,7 +4,9 @@
  * Project: github.com/gorhill/cronexpr
  * File: cronexpr.go
  * Version: 1.0
- * License: GPL v3 see <https://www.gnu.org/licenses/gpl.html>
+ * License: pick the one which suits you :
+ *   GPL v3 see <https://www.gnu.org/licenses/gpl.html>
+ *   APL v2 see <http://www.apache.org/licenses/LICENSE-2.0>
  *
  */
 
diff --git a/cronexpr_next.go b/cronexpr_next.go
index 1d627b4..a0ebdb6 100644
--- a/cronexpr_next.go
+++ b/cronexpr_next.go
@@ -4,7 +4,9 @@
  * Project: github.com/gorhill/cronexpr
  * File: cronexpr_next.go
  * Version: 1.0
- * License: GPL v3 see <https://www.gnu.org/licenses/gpl.html>
+ * License: pick the one which suits you :
+ *   GPL v3 see <https://www.gnu.org/licenses/gpl.html>
+ *   APL v2 see <http://www.apache.org/licenses/LICENSE-2.0>
  *
  */
 
diff --git a/cronexpr_parse.go b/cronexpr_parse.go
index f7df2b5..2a0e5bc 100644
--- a/cronexpr_parse.go
+++ b/cronexpr_parse.go
@@ -4,7 +4,9 @@
  * Project: github.com/gorhill/cronexpr
  * File: cronexpr_parse.go
  * Version: 1.0
- * License: GPL v3 see <https://www.gnu.org/licenses/gpl.html>
+ * License: pick the one which suits you best:
+ *   GPL v3 see <https://www.gnu.org/licenses/gpl.html>
+ *   APL v2 see <http://www.apache.org/licenses/LICENSE-2.0>
  *
  */
 
diff --git a/cronexpr_test.go b/cronexpr_test.go
index 9be7eff..20c75c3 100644
--- a/cronexpr_test.go
+++ b/cronexpr_test.go
@@ -4,7 +4,9 @@
  * Project: github.com/gorhill/cronexpr
  * File: cronexpr_test.go
  * Version: 1.0
- * License: GPL v3 see <https://www.gnu.org/licenses/gpl.html>
+ * License: pick the one which suits you best:
+ *   GPL v3 see <https://www.gnu.org/licenses/gpl.html>
+ *   APL v2 see <http://www.apache.org/licenses/LICENSE-2.0>
  *
  */