diff --git a/doc/src/week40/week40.do.txt b/doc/src/week40/week40.do.txt
index 7350cc7d2..696d13c3c 100644
--- a/doc/src/week40/week40.do.txt
+++ b/doc/src/week40/week40.do.txt
@@ -1,6 +1,6 @@
 TITLE: Week 40: Gradient descent methods (continued) and start Neural networks
-AUTHOR: Morten Hjorth-Jensen {copyright, 1999-present|CC BY-NC} at Department of Physics, University of Oslo, Norway & Department of Physics and Astronomy and Facility for Rare Ion Beams, Michigan State University, USA
-DATE: September 30-October 4, 2024
+AUTHOR: Morten Hjorth-Jensen {copyright, 1999-present|CC BY-NC} at Department of Physics, University of Oslo, Norway
+DATE: September 29-October 3, 2025