diff --git a/debian/changelog b/debian/changelog
index 939c354..e5b1e0b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -18,6 +18,9 @@
 
   [ Laurent Baillet ]
   * fix lintian file-contains-trailing-whitespace warning
+
+  [ Debian Janitor ]
+  * Bump debhelper from old 9 to 12.
 
  -- gregor herrmann <gregoa@debian.org>  Sat, 24 Oct 2015 13:45:20 +0200
 
diff --git a/debian/compat b/debian/compat
index ec63514..48082f7 100644
--- a/debian/compat
+++ b/debian/compat
@@ -1 +1 @@
-9
+12
diff --git a/debian/control b/debian/control
index a36b04f..2e19aba 100644
--- a/debian/control
+++ b/debian/control
@@ -3,7 +3,7 @@
 Section: perl
 Testsuite: autopkgtest-pkg-perl
 Priority: optional
-Build-Depends: debhelper (>= 9.20120312~),
+Build-Depends: debhelper (>= 12~),
                perl
 Standards-Version: 3.9.6
 Vcs-Browser: https://salsa.debian.org/perl-team/modules/packages/libfile-fcntllock-perl