diff --git a/free-programming-books.md b/free-programming-books.md
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+++ b/free-programming-books.md
@@ -1620,6 +1620,7 @@ For resources on Angular, Backbone, D3, Dojo, Ember, Express, jQuery, Knockout,
 
 ### PostgreSQL
 
+* [Postgres Official Documentation](http://www.postgresql.org/docs/)
 * [Postgres Succinctly](http://www.syncfusion.com/resources/techportal/ebooks/postgres) (PDF, Kindle) *(Just fill the fields with any values)*
 * [Practical PostgreSQL](http://www.commandprompt.com/ppbook/)