diff --git a/wiki/d-si-online-guide.md b/wiki/d-si-online-guide.md
index 8ca6e200af0dd7c0502ad28de53b31b8bd8b3444..9437c664491c5298aa69409053ad62e20b10dd25 100644
--- a/wiki/d-si-online-guide.md
+++ b/wiki/d-si-online-guide.md
@@ -30,7 +30,7 @@
 
 [1] [BIPM Brochure, The international System of Units (SI) 9th edition 2019](https://www.bipm.org/en/publications/si-brochure/)
 
-[2] [SmartCom Digital System of Units (D-SI) Guide for the use of the metadata-format used in metrology for the easy-to-use, safe, harmonised and unambiguous digital transfer of metrological data](https://doi.org/10.5281/zenodo.3522631)
+[2] [SmartCom Digital System of Units (D-SI) Guide for the use of the metadata-format used in metrology for the easy-to-use, safe, harmonised and unambiguous digital transfer of metrological data](https://doi.org/10.5281/zenodo.3816686)
 
 [3] [SmartCom Digital System of Units (D-SI) Outline of the complete metadata model](https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si/blob/feat-online-guide/wiki/doc/SmartCom_D-SI_v1.3.pdf)