diff --git a/lib/Makefile.dfgproposal b/lib/Makefile.dfgproposal
index fc83213..a2b893a 100644
--- a/lib/Makefile.dfgproposal
+++ b/lib/Makefile.dfgproposal
@@ -42,7 +42,7 @@ cd: 	                                           # make cd will prepare CD for bu
 
 bbl: $(BBL)
 $(BBL): %.bbl: %.aux
-	bibtex -min-crossrefs=100 -terse $<
+	biber -min-crossrefs=100 -terse $<
 
 $(PDATA): %.pdata: %.tex
 	$(PDFLATEX) $<