diff --git a/doc/ReleaseNotes/ReleaseNotes.tex b/doc/ReleaseNotes/ReleaseNotes.tex
index 6d41dd8ad47..39cef7608cb 100644
--- a/doc/ReleaseNotes/ReleaseNotes.tex
+++ b/doc/ReleaseNotes/ReleaseNotes.tex
@@ -177,7 +177,7 @@ \section{Release History}
 6.4.1 & December 9, 2022 & \url{https://doi.org/10.5066/P9FL1JCC} \\
 6.4.2 & June 28, 2023 & \url{https://doi.org/10.5066/P9FL1JCC} \\
 6.4.3 & February 7, 2024 & \url{https://doi.org/10.5066/P9FL1JCC} \\
-6.x.x & Xxx x, 202x & \url{https://doi.org/10.5066/P9FL1JCC} \\
+6.4.4 & February 13, 2024 & \url{https://doi.org/10.5066/P9FL1JCC} \\
 \hline
 \label{tab:releases}
 \end{tabular*}
diff --git a/doc/ReleaseNotes/develop.tex b/doc/ReleaseNotes/develop.tex
index f4813a50b54..c6e7876bdd9 100644
--- a/doc/ReleaseNotes/develop.tex
+++ b/doc/ReleaseNotes/develop.tex
@@ -42,7 +42,7 @@
 	\underline{ADVANCED STRESS PACKAGES}
 	\begin{itemize}
 		\item Refactoring of the Water Mover package in version 6.4.3 introduced a reduction in performance for GWF models with a large number of movers.  The program was corrected so that performance is similar to previous versions.
-	%	\item xxx
+		\item Deprecation warnings in the Lake and Streamflow Routing Packages, which can be issued by MODFLOW 6 at run time, incorrectly listed the version number as 6.5.0.  The warning was modified to show 6.4.3 as the version number for the deprecation.
 	%	\item xxx
 	\end{itemize}
 
@@ -60,3 +60,10 @@
 	%	\item xxx
 	%\end{itemize}
 
+	\underline{PARALLEL}
+	\begin{itemize}
+		\item A memory leak was identified in the way MPI messages were constructed and cached.  The memory leak caused problems for large models with many time steps.  The message construction and caching was fixed and tests confirm that the memory leak is no longer present.
+	%	\item xxx
+	%	\item xxx
+	\end{itemize}
+
diff --git a/doc/ReleaseNotes/vx.x.x-template.tex b/doc/ReleaseNotes/vx.x.x-template.tex
index 7771001dfba..467f4f458ca 100644
--- a/doc/ReleaseNotes/vx.x.x-template.tex
+++ b/doc/ReleaseNotes/vx.x.x-template.tex
@@ -60,3 +60,10 @@
 	%	\item xxx
 	%\end{itemize}
 
+	%\underline{PARALLEL}
+	%\begin{itemize}
+	%	\item xxx
+	%	\item xxx
+	%	\item xxx
+	%\end{itemize}
+