diff --git a/site/ocrd-events.json b/site/ocrd-events.json
index 6b46684f5..d35df2fea 100644
--- a/site/ocrd-events.json
+++ b/site/ocrd-events.json
@@ -19,13 +19,13 @@
       "dtstart": "2021-10-14T13:00:00",
       "tzid": "Europe/Berlin"
     },
-	"exdate": ["2023-06-08T13:00:00", "2022-03-31T13:00:00", "2022-04-14T13:00:00"]
+	"exdate": "2023-07-06T13:00:00"
   },
   {
     "title": "Open GT-Call (postponed!)",
 	"color": "#dab82d",
     "rrule": {
-      "dtstart": "2023-06-15T13:00:00",
+      "dtstart": "2023-07-13T13:00:00",
       "tzid": "Europe/Berlin"
     }
   },