diff --git a/concerts/ciba2021.json b/concerts/ciba2021.json
index b4af5d8..5d89788 100644
--- a/concerts/ciba2021.json
+++ b/concerts/ciba2021.json
@@ -1,4 +1,5 @@
 {
+  "codename": "ciba2021",
   "title": "Dones de Musicaula en concert",
   "subtitle": "La Ciba - 7 de març del 2021",
   "begins": 1615137300,
diff --git a/concerts/nadal2020joves.json b/concerts/nadal2020joves.json
index 5481a8c..669cd9a 100644
--- a/concerts/nadal2020joves.json
+++ b/concerts/nadal2020joves.json
@@ -1,4 +1,5 @@
 {
+  "codename": "nadal2020joves",
   "title": "Concert de Nadal 2020",
   "subtitle": "Joves i adults",
   "begins": 1608312600,
diff --git a/concerts/nadal2020nens.json b/concerts/nadal2020nens.json
index 9b21169..8bb57db 100644
--- a/concerts/nadal2020nens.json
+++ b/concerts/nadal2020nens.json
@@ -1,4 +1,5 @@
 {
+  "codename": "nadal2020nens",
   "title": "Concert de Nadal 2020",
   "subtitle": "Nens i nenes",
   "begins": 0,