diff --git a/frequency.go b/frequency.go
index 7323150..b8ea24d 100644
--- a/frequency.go
+++ b/frequency.go
@@ -10,7 +10,7 @@ import (
 	"time"
 )
 
-const SwissGridAPI = "https://www.swissgrid.ch/content/swissgrid/fr/home/operation/grid-data/current-data.apicache.html?path=/content/swissgrid/fr/home/operation/grid-data/current-data/jcr:content/parsys/livedatawidget_10292"
+const SwissGridAPI = "https://www.swissgrid.ch/content/swissgrid/fr/home/operation/grid-data/current-data.apicache.json?path=/content/swissgrid/fr/home/operation/grid-data/current-data/jcr:content/parsys/livedatawidget_10292"
 
 var (
 	LastFreqPlan = 50.0