diff --git a/debian/gbp.conf b/debian/gbp.conf
index f8820e0..d3dafbd 100644
--- a/debian/gbp.conf
+++ b/debian/gbp.conf
@@ -1,3 +1,3 @@
 [DEFAULT]
 upstream-tree = master
-debian-branch = debian/bullseye
+debian-branch = debian/bookworm