diff --git a/index.md b/index.md
index 3284a84..1b964ee 100644
--- a/index.md
+++ b/index.md
@@ -11,8 +11,8 @@ latitude: "50.937531"        # decimal latitude of workshop venue (use https://w
 longitude: "6.960279"       # decimal longitude of the workshop venue (use https://www.latlong.net)
 humandate: "Apr 07-08, 2025"    # human-readable dates for the workshop (e.g., "Feb 17-18, 2020")
 humantime: "9:00 am - 4:00 om CET"    # human-readable times for the workshop e.g., "9:00 am - 4:30 pm CEST (7:00 am - 2:30 pm UTC)"
-startdate: 2024-04-07      # machine-readable start date for the workshop in YYYY-MM-DD format like 2015-01-01
-enddate: 2023-04-08        # machine-readable end date for the workshop in YYYY-MM-DD format like 2015-01-02
+startdate: 2025-04-07      # machine-readable start date for the workshop in YYYY-MM-DD format like 2015-01-01
+enddate: 2025-04-08        # machine-readable end date for the workshop in YYYY-MM-DD format like 2015-01-02
 instructor: ["Rabea Müller", "Till Sauerwein"] # boxed, comma-separated list of instructors' names as strings, like ["Kay McNulty", "Betty Jennings", "Betty Snyder"]
 helper: ["TBA"]     # boxed, comma-separated list of helpers' names, like ["Marlyn Wescoff", "Fran Bilas", "Ruth Lichterman"]
 email: ["muellerr@zbmed.de"]    # boxed, comma-separated list of contact email addresses for the host, lead instructor, or whoever else is handling questions, like ["marlyn.wescoff@example.org", "fran.bilas@example.org", "ruth.lichterman@example.org"]