diff --git a/protocol/protocol.tex b/protocol/protocol.tex
index ebd2ab9a..f6be7ad1 100644
--- a/protocol/protocol.tex
+++ b/protocol/protocol.tex
@@ -5204,6 +5204,16 @@ The errors in the proof of Ledger Indistinguishability mentioned in
 \introlist
 \nsection{Change history}
 
+\subparagraph{2018.0-beta-4}
+
+\begin{itemize}
+    \item No changes to \Sprout.
+\sapling{
+    \item{Update key components diagram for \Sapling.}
+}
+\end{itemize}
+
+\introlist
 \subparagraph{2018.0-beta-3}
 
 \begin{itemize}