diff --git a/debian/changelog b/debian/changelog
index ac12b4c..ea513e2 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,9 +1,13 @@
 flask-multistatic (1.0-3) UNRELEASED; urgency=medium
 
+  [ Ondřej Nový ]
   * d/control: Update Maintainer field with new Debian Python Team
     contact address.
   * d/control: Update Vcs-* fields with new Debian Python Team Salsa
     layout.
+
+  [ Debian Janitor ]
+  * Bump debhelper from deprecated 9 to 12.
 
  -- Ondřej Nový <onovy@debian.org>  Thu, 24 Sep 2020 08:59:37 +0200
 
diff --git a/debian/control b/debian/control
index 6f11dad..b690d8d 100644
--- a/debian/control
+++ b/debian/control
@@ -3,7 +3,7 @@
 Priority: optional
 Maintainer: Debian Python Team <team+python@tracker.debian.org>
 Uploaders: Sergio Durigan Junior <sergiodj@sergiodj.net>
-Build-Depends: debhelper-compat (= 9),
+Build-Depends: debhelper-compat (= 12),
 	       dh-python,
 	       python3-all,
 	       python3-setuptools