diff --git a/debian/changelog b/debian/changelog
index c67b054..d8317f3 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,6 +1,7 @@
 node-d3-shape (1.3.5-3) UNRELEASED; urgency=medium
 
   * Use secure copyright file specification URI.
+  * Bump debhelper from old 11 to 12.
 
  -- Debian Janitor <janitor@jelmer.uk>  Thu, 09 Jan 2020 03:45:28 +0000
 
diff --git a/debian/compat b/debian/compat
index b4de394..48082f7 100644
--- a/debian/compat
+++ b/debian/compat
@@ -1 +1 @@
-11
+12
diff --git a/debian/control b/debian/control
index fbb7eb3..e5f0cb7 100644
--- a/debian/control
+++ b/debian/control
@@ -4,7 +4,7 @@
 Maintainer: Debian Javascript Maintainers <pkg-javascript-devel@lists.alioth.debian.org>
 Uploaders: Pirate Praveen <praveen@debian.org>
 Build-Depends:
- debhelper (>= 11~)
+ debhelper (>= 12~)
  , nodejs
  , pkg-js-tools
  , node-tape