diff --git a/about.md b/about.md
index 4a080ccc792e33586624760f726c02fcc4cbe607..016ea7b736a43bdc10d1aa7a867bea8b4735354c 100644
--- a/about.md
+++ b/about.md
@@ -64,7 +64,9 @@ of their time to software development.
         <li><a href="https://www.newyorkfed.org/research/economists/pesenti" target="_blank">Paolo Pesenti</a>,<span> Senior Vice President and Monetary Policy Advisor, Federal Reserve Bank of New York,</span></li>
         <li><a href="https://sites.google.com/site/juanfrubioramirez/" target="_blank">Juan Rubio-Ramirez</a>,<span> Professor of Economics, Emory University,</span></li>
         <li><a href="http://www.tomsargent.com/index.html" target="_blank">Thomas Sargent</a>,<span> Professor of Economics, New York University,</span></li>
+        <li><a href="https://web.sas.upenn.edu/schorf/" target="_blank">Frank Schorfheide</a>,<span> Professor and Chair of Economics, University of Pennsyvania,</span></li>
         <li><a href="https://www.federalreserve.gov/econres/robert-j-tetlow.htm" target="_blank">Robert Tetlow</a>,<span> Senior Adviser, Board of Governors of the Federal Reserve System,</span></li>
+        <li><a href="https://www.imfs-frankfurt.de/en/chairs/prof-volker-wieland.html" target="_blank">Volker Wieland</a>,<span> Chair of Monetary Economics and Managing Director, Institute for Monetary and Financial Stability (Goethe University of Frankfurt),</span></li>
         <li><a href="http://www.columbia.edu/~mw2230/" target="_blank">Michael Woodford</a>,<span> Professor of Political Economy, Columbia University,</span></li>
         <li><a href="https://ideas.repec.org/e/pwo72.html" target="_blank">Rafael Wouters</a>,<span> National Bank of Belgium,</span></li>
         <li><a href="http://www.tzha.net/" target="_blank">Tao Zha</a>,<span> Executive Director at the Federal Reserve Bank of Atlanta and Professor of Economics at Emory University.</span></li>