Index: doc/bibliography/pl.bib
===================================================================
--- doc/bibliography/pl.bib	(revision 8136df1210d3d27dd6ffabd23376885f7cb6e0e2)
+++ doc/bibliography/pl.bib	(revision a43b743e194657871fa3350b4eefdaaa1993d3e7)
@@ -1973,6 +1973,6 @@
     organization= {University of Waterloo},
     address	= {Waterloo Ontario, Canada},
-    month	= sep,
-    year	= 2020,
+    month	= aug,
+    year	= 2025,
     note	= {\url{https://plg.uwaterloo.ca/~usystem/pub/uSystem/uC++.pdf}},
 }