diff --git a/content/activities/201806-cryptoparty.md b/content/activities/201806-cryptoparty.md
index 2532c0c7..13d0f53f 100644
--- a/content/activities/201806-cryptoparty.md
+++ b/content/activities/201806-cryptoparty.md
@@ -1,6 +1,6 @@
 ---
 kind: event
-startdate: 2018-06-16T14:00:00Z
+startdate: 2018-06-09T14:00:00Z
 duration: 4h
 title: "Cryptoparty in der Stadtbibliothek"
 location: