diff --git a/protocol/protocol.tex b/protocol/protocol.tex
index caa32e92..93f83422 100644
--- a/protocol/protocol.tex
+++ b/protocol/protocol.tex
@@ -84,6 +84,8 @@
 % <https://tex.stackexchange.com/questions/17178/vertical-spacing-pagination-and-ideal-results>
 \setlength{\parskip}{1.5ex plus 1pt minus 1pt}
 
+\setlength{\bibitemsep}{1.2ex}  % default is too cramped!
+
 \setlist[enumerate]{before=\vspace{-1ex}}
 \setlist[itemize]{itemsep=0.5ex,topsep=0.2ex,before=\vspace{-1ex},after=\vspace{1.5ex}}