diff --git a/BOOK.mkd b/BOOK.mkd
index 7374baa..2a525fd 100644
--- a/BOOK.mkd
+++ b/BOOK.mkd
@@ -3,6 +3,7 @@
 * Februar: [Blake Crouch "Upgrade"](https://yourbook.shop/book/?isbn=9781529045369&ref=mezzo&aff=mr)
 * März: [Kim Stanley Robinson "Das Ministerium für die Zukunft"](https://yourbook.shop/book/?isbn=9783641280185&ref=mezzo&aff=mr)
 * April: [Kris Brynn "The Shelter - Zukunft ohne Hoffnung"](https://yourbook.shop/book/?isbn=9783741301315&ref=mezzo&aff=mr)
+* Mai: [Sibylle Berg "RCE"](https://yourbook.shop/book/?isbn=9783462001648&ref=mezzo&aff=mr)
 
 ## 2022
 * Januar: [Dave Eggers "Every"](https://yourbook.shop/book/?isbn=9783462001129&ref=mezzo&aff=mr)