Index: doc/bibliography/pl.bib
===================================================================
--- doc/bibliography/pl.bib	(revision 1280f9555d7bcba29027a7cace5efea229802566)
+++ doc/bibliography/pl.bib	(revision 1feb535fb19cf9656f8f85cf2ef61a8985f3bf97)
@@ -6687,5 +6687,5 @@
     contributer	= {pabuhr@plg},
     author	= {{TIOBE Index}},
-    year	= {March 2017},
+    year	= {February 2018},
     url		= {http://www.tiobe.com/tiobe_index},
 }