diff --git a/spec/23/speakers.yaml b/spec/23/speakers.yaml
index 2fa25e5..d97761d 100644
--- a/spec/23/speakers.yaml
+++ b/spec/23/speakers.yaml
@@ -1338,6 +1338,7 @@
     Head of research
   tracks: [ eth, spolecnost ]
   country: cz
+  lead: true
   #pretalxId: 
         
 - id: markoinether