diff --git a/index.php b/index.php
index 4fb0d55..45ecdd2 100644
--- a/index.php
+++ b/index.php
@@ -1,4 +1,14 @@
 <?php // @codingStandardsIgnoreFile
+/**
+ * This file is part of Pico. It's copyrighted by the contributors recorded
+ * in the version control history of the file, available from the following
+ * original location:
+ *
+ * <https://github.com/picocms/Pico/blob/master/index.php>
+ *
+ * SPDX-License-Identifier: MIT
+ * License-Filename: LICENSE
+ */
 
 // load dependencies
 if (is_file(__DIR__ . '/vendor/autoload.php')) {
diff --git a/index.php.dist b/index.php.dist
index 78125ad..59639ad 100644
--- a/index.php.dist
+++ b/index.php.dist
@@ -1,4 +1,14 @@
 <?php // @codingStandardsIgnoreFile
+/**
+ * This file is part of Pico. It's copyrighted by the contributors recorded
+ * in the version control history of the file, available from the following
+ * original location:
+ *
+ * <https://github.com/picocms/Pico/blob/master/index.php.dist>
+ *
+ * SPDX-License-Identifier: MIT
+ * License-Filename: LICENSE
+ */
 
 // check PHP platform requirements
 if (PHP_VERSION_ID < 50306) {