diff --git a/content/projects.haml b/content/projects.haml
index 9c4e737..58777e8 100644
--- a/content/projects.haml
+++ b/content/projects.haml
@@ -36,3 +36,18 @@ title: Projects
 
       * [Website](http://fireflyrb.com)
       * [Github](https://github.com/ariejan/firefly)
+
+      ## PostcodeAPI
+
+      A simple ruby wrapper around the [Postcode API service](http://www.postcodeapi.nu/).
+
+      * [Github](https://github.com/ariejan/postcodeapi)
+
+      ## elfproef
+
+      The 11-check is a checksum algorithm used to validate Dutch bank account numbers and
+      social security numbers.
+
+      This gem allows you to add validations to your Rails models for these kind of fields.
+
+      * [Github](https://github.com/sytzeloor/elfproef)