diff --git a/debian/changelog b/debian/changelog
index 71c727e..e0f365b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+formiko (1.4.3-3) UNRELEASED; urgency=medium
+
+ * Bump debhelper from old 12 to 13.
+
+ -- Debian Janitor <janitor@jelmer.uk> Tue, 23 May 2023 20:17:26 -0000
+
formiko (1.4.3-2) unstable; urgency=low
[ Debian Janitor ]
diff --git a/debian/control b/debian/control
index 82f6d07..5d7afeb 100644
--- a/debian/control
+++ b/debian/control
@@ -3,7 +3,7 @@ Section: editors
Priority: optional
Maintainer: Ondřej Tůma <mcbig@zeropage.cz>
Build-Depends:
- debhelper-compat (= 12),
+ debhelper-compat (= 13),
dh-python,
python3-all,
python3-docutils,