diff --git a/metasj.md b/metasj.md
index 05908a8ed..04d4391b2 100644
--- a/metasj.md
+++ b/metasj.md
@@ -4,6 +4,7 @@
 
 ## [[2021-05-22]]
 - ahoy!
+- [[wikidata hackathon]] used [[big blue button]]
 
 ## [[2021-05-05]]