diff --git a/index.js b/index.js
index 5562e47..202ad2f 100644
--- a/index.js
+++ b/index.js
@@ -1,3 +1,7 @@
+// babel-plugin-react-translate
+// (c) Vitaliy Filippov 2021+
+// SPDX-License-Identifier: LGPL-3.0
+
 const fs = require('fs');
 
 module.exports = function(babel)
diff --git a/plural_ru.js b/plural_ru.js
index b85d7b2..243bf2a 100644
--- a/plural_ru.js
+++ b/plural_ru.js
@@ -1,3 +1,7 @@
+// babel-plugin-react-translate
+// (c) Vitaliy Filippov 2021+
+// SPDX-License-Identifier: LGPL-3.0
+
 export default function plural_ru(count, one, few, many)
 {
     var sto = count % 100;
diff --git a/runtime.js b/runtime.js
index 92ff748..2287f27 100644
--- a/runtime.js
+++ b/runtime.js
@@ -1,3 +1,7 @@
+// babel-plugin-react-translate
+// (c) Vitaliy Filippov 2021+
+// SPDX-License-Identifier: LGPL-3.0
+
 import plural from './plural_ru.js';
 
 const strings = {};