diff --git a/Gemfile.lock b/Gemfile.lock
index 5891351f..f1c8e59d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -141,4 +141,4 @@ DEPENDENCIES
   t (~> 2.10.0)
 
 BUNDLED WITH
-   1.16.1
+   2.1.4
diff --git a/content/_data/platzhalter.yaml b/content/_data/platzhalter.yaml
index 6dc30bca..d8c5da13 100644
--- a/content/_data/platzhalter.yaml
+++ b/content/_data/platzhalter.yaml
@@ -15,11 +15,6 @@ events:
   duration: 2h
   location:
     location: bib
-- title: CCCS Vortragsreihe (Thema noch offen)
-  startdate: 2021-04-15 19:30:00.000000000 +01:00
-  duration: 2h
-  location:
-    location: bib
 - title: CCCS Vortragsreihe (Thema noch offen)
   startdate: 2021-05-13 19:30:00.000000000 +01:00
   duration: 2h