diff --git a/free-programming-books-pl.md b/free-programming-books-pl.md
index 5ce0c2b8b..2a056c919 100644
--- a/free-programming-books-pl.md
+++ b/free-programming-books-pl.md
@@ -8,6 +8,7 @@
 * [JavaScript](#javascript)
 * [LaTeX](#latex)
 * [PHP](#php)
+* [Prolog](#prolog)
 * [Python](#python)
 * [Ruby](#ruby)
 * [SQL](#sql)
@@ -59,6 +60,10 @@
 * [PHP: The Right Way](http://pl.phptherightway.com/)
 
 
+###Prolog
+* [Programowanie w logice z ograniczeniami: Łagodne wprowadzenie dla platformy ECLiPSe](http://www.pwlzo.pl/)
+
+
 ###Python
 * [Ukąś Pythona](http://python.edu.pl/byteofpython/index.html)
 * [Zanurkuj w Pythonie](http://pl.wikibooks.org/wiki/Zanurkuj_w_Pythonie)