How to list supplementary figures in the table of contents?

I added a list of supplementary figures using the following code:

usepackage{newfloat}
DeclareFloatingEnvironment[name={Supplementary Figure},fileext=lsf,listname={List of Supplementary Figures}]{suppfigure}

begin{document}

tableofcontents
listoftables
listoffigures
listofsuppfigures

This works great for the list of supplementary figures. However, now the Table of Contents reads:

List of Tables

List of Figures

List of Figures

How do I change the Table of Contents so that it will read:

List of Tables

List of Figures

List of Supplementary Figures

Thanks!