diff --git a/iacrcc/iacrdoc.pdf b/iacrcc/iacrdoc.pdf
index fa7dc80..aead62a 100644
Binary files a/iacrcc/iacrdoc.pdf and b/iacrcc/iacrdoc.pdf differ
diff --git a/iacrcc/iacrdoc.tex b/iacrcc/iacrdoc.tex
index cd376a5..cfb6f03 100644
--- a/iacrcc/iacrdoc.tex
+++ b/iacrcc/iacrdoc.tex
@@ -471,8 +471,8 @@ \section{Typesetting the Bibliography}
 from \url{http://www.dblp.org} or \url{https://cryptobib.di.ens.fr/}.
 All references should have DOIs if at all possible.
 
-You may use either \BibTeX\ or \BibLaTeX. If you use \BibTeX,
-then the \texttt{iacrcc} class will load the
+You must use either \BibTeX\ or \BibLaTeX; you may not format your own bibliography.
+If you use \BibTeX, then the \texttt{iacrcc} class will load the
 \verb+\bibliographystyle{alphaurl}+ style.  You may not change
 this. If you use \BibLaTeX, then this is done using
 \verb+\documentclass[biblatex]{iacrcc}+ instead of