diff --git a/R/posterdown_memoir.R b/R/posterdown_memoir.R
index d9cfeca..6b3d781 100644
--- a/R/posterdown_memoir.R
+++ b/R/posterdown_memoir.R
@@ -18,5 +18,5 @@
   inherit_pdf_document(...,
                        keep_tex = keep_tex,
                        template = find_resource("posterdown_memoir", "template.tex"),
-                       citation_package = "natbib")
+                       citation_package = "biblatex")
 }