diff --git a/Requirements.md b/Requirements.md
index ef41caa..d30bcfe 100644
--- a/Requirements.md
+++ b/Requirements.md
@@ -1,11 +1,11 @@
 **RSS-Bridge** requires a Web server* with:
 
   - PHP 5.6 (or higher) => (Read [this](RSS-Bridge-on-PHP-5.4) for PHP 5.4)
-  - `openssl` extension
-  - `libxml` extension (enabled by default, see [PHP Manual](http://php.net/manual/en/libxml.installation.php))
-  - `mbstring` extension
-  - `simplexml` extension
-  - `curl` extension
+  - [`openssl`](https://secure.php.net/manual/en/book.openssl.php) extension
+  - [`libxml`](https://secure.php.net/manual/en/book.libxml.php) extension (enabled by default, see [PHP Manual](http://php.net/manual/en/libxml.installation.php))
+  - [`mbstring`](https://secure.php.net/manual/en/book.mbstring.php) extension
+  - [`simplexml`](https://secure.php.net/manual/en/book.simplexml.php) extension
+  - [`curl`](https://secure.php.net/manual/en/book.curl.php) extension
   - `allow_url_fopen` enabled (`On` or `1`)
 
 Enable extensions by un-commenting the corresponding line in your PHP configuration (`php.ini`).