diff --git a/README.md b/README.md
index 6ed3198ca..b59a48205 100644
--- a/README.md
+++ b/README.md
@@ -6,14 +6,14 @@ Grav is a **Fast**, **Simple**, and **Flexible**, file-based Web-platform.  Ther
 
 The underlying architecture of Grav is designed to use well-established and _best-in-class_ technologies to ensure that Grav is simple to use and easy to extend. Some of these key technologies include:
 
-* [Twig Templating](http://twig.sensiolabs.org/): for powerful control of the user interface
-* [Markdown](http://en.wikipedia.org/wiki/Markdown): for easy content creation
-* [YAML](http://yaml.org): for simple configuration
-* [Parsedown](http://parsedown.org/): for fast Markdown and Markdown Extra support
-* [Doctrine Cache](http://doctrine-orm.readthedocs.io/projects/doctrine-orm/en/latest/reference/caching.html): layer for performance
-* [Pimple Dependency Injection Container](http://pimple.sensiolabs.org/): for extensibility and maintainability
-* [Symfony Event Dispatcher](http://symfony.com/doc/current/components/event_dispatcher/introduction.html): for plugin event handling
-* [Symfony Console](http://symfony.com/doc/current/components/console/introduction.html): for CLI interface
+* [Twig Templating](https://twig.sensiolabs.org/): for powerful control of the user interface
+* [Markdown](https://en.wikipedia.org/wiki/Markdown): for easy content creation
+* [YAML](https://yaml.org): for simple configuration
+* [Parsedown](https://parsedown.org/): for fast Markdown and Markdown Extra support
+* [Doctrine Cache](https://www.doctrine-project.org/projects/doctrine-orm/en/latest/reference/caching.html): layer for performance
+* [Pimple Dependency Injection Container](https://pimple.sensiolabs.org/): for extensibility and maintainability
+* [Symfony Event Dispatcher](https://symfony.com/doc/current/components/event_dispatcher/introduction.html): for plugin event handling
+* [Symfony Console](https://symfony.com/doc/current/components/console/introduction.html): for CLI interface
 * [Gregwar Image Library](https://github.com/Gregwar/Image): for dynamic image manipulation
 
 # Requirements