diff --git a/Treffen/2020_04_05.md b/Treffen/2020_04_05.md
index eb23277..847e026 100644
--- a/Treffen/2020_04_05.md
+++ b/Treffen/2020_04_05.md
@@ -2,3 +2,4 @@
 
 1. [KDE Neon](https://distrowatch.com/table.php?distribution=kdeneon)
 2. [Open Source Videospiele](https://en.wikipedia.org/wiki/List_of_open-source_video_games)
+3. [Corona-Video von Mai Lab](https://youtu.be/3z0gnXgK8Do)