Use HTTPS instead of HTTP

README.md

@@ -8,7 +8,7 @@ PHPUnit is a programmer-oriented testing framework for PHP. It is an instance of
 
 ## Installation
 
-We distribute a [PHP Archive (PHAR)](http://php.net/phar) that has all required (as well as some optional) dependencies of PHPUnit bundled in a single file:
+We distribute a [PHP Archive (PHAR)](https://php.net/phar) that has all required (as well as some optional) dependencies of PHPUnit bundled in a single file:
 
 ```bash
 $ wget https://phar.phpunit.de/phpunit.phar
@@ -26,7 +26,7 @@ $ wget https://phar.phpunit.de/phpunit.phar
 $ php phpunit.phar
 ```
 
-Alternatively, you may use [Composer](http://getcomposer.org/) to download and install PHPUnit as well as its dependencies. Please refer to the [documentation](https://phpunit.de/documentation.html) for details on how to do this.
+Alternatively, you may use [Composer](https://getcomposer.org/) to download and install PHPUnit as well as its dependencies. Please refer to the [documentation](https://phpunit.de/documentation.html) for details on how to do this.
 
 ## Contribute