diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
index 2cf1133..c7d2982 100644
--- a/CODE_OF_CONDUCT.md
+++ b/CODE_OF_CONDUCT.md
@@ -5,6 +5,8 @@ title: "Contributor Code of Conduct"
 As contributors and maintainers of this project,
 we pledge to follow the [Carpentry Code of Conduct][coc].
 
+All workshop participants are also expected to follow the [CERN Code of Conduct](https://cds.cern.ch/record/2240689/files/BrochureCodeofConductEN.pdf?version=1)
+
 Instances of abusive, harassing, or otherwise unacceptable behavior
 may be reported by following our [reporting guidelines][coc-reporting].