diff --git a/debian/gbp.conf b/debian/gbp.conf
index 597ef86..5a7a562 100644
--- a/debian/gbp.conf
+++ b/debian/gbp.conf
@@ -1,5 +1,5 @@
 [DEFAULT]
-debian-branch = bookworm-php83
+debian-branch = bullseye-php71
 debian-tag = debian/%(version)s
 pristine-tar = False