diff --git a/license.md b/license.md
index cf741bd0..a955f5d3 100644
--- a/license.md
+++ b/license.md
@@ -56,5 +56,5 @@ GNU General Public License
 GPL licenses are very very long, so instead of including them here we offer
 you URLs with full text:
 
-- [GPL version 2](http://www.gnu.org/licenses/gpl-2.0.html)
-- [GPL version 3](http://www.gnu.org/licenses/gpl-3.0.html)
+- [GPL version 2](https://www.gnu.org/licenses/gpl-2.0.html)
+- [GPL version 3](https://www.gnu.org/licenses/gpl-3.0.html)
diff --git a/src/Security/Passwords.php b/src/Security/Passwords.php
index da71f4bc..f671deea 100644
--- a/src/Security/Passwords.php
+++ b/src/Security/Passwords.php
@@ -27,7 +27,7 @@ class Passwords
 
 
 	/**
-	 * See http://php.net/manual/en/password.constants.php
+	 * See https://php.net/manual/en/password.constants.php
 	 */
 	public function __construct(int $algo = PASSWORD_DEFAULT, array $options = [])
 	{
diff --git a/src/Security/Permission.php b/src/Security/Permission.php
index 826db639..448d57f2 100644
--- a/src/Security/Permission.php
+++ b/src/Security/Permission.php
@@ -15,7 +15,7 @@
 /**
  * Access control list (ACL) functionality and privileges management.
  *
- * This solution is mostly based on Zend_Acl (c) Zend Technologies USA Inc. (http://www.zend.com), new BSD license
+ * This solution is mostly based on Zend_Acl (c) Zend Technologies USA Inc. (https://www.zend.com), new BSD license
  *
  * @copyright  Copyright (c) 2005, 2007 Zend Technologies USA Inc.
  */