diff --git a/debian/changelog b/debian/changelog
index 42496c666b55c8e933e0e946ee6d779df3c4331a..5c6fb406f60257d86dc0b66644f16adaa4fd5117 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -14,6 +14,7 @@ ruby-bert (1.1.6-2) UNRELEASED; urgency=medium
   * Use secure copyright file specification URI.
   * Use secure URI in debian/watch.
   * Use secure URI in Homepage field.
+  * Bump debhelper from old 9 to 12.
 
  -- Utkarsh Gupta <guptautkarsh2102@gmail.com>  Tue, 13 Aug 2019 03:35:42 +0530
 
diff --git a/debian/compat b/debian/compat
index ec635144f60048986bc560c5576355344005e6e7..48082f72f087ce7e6fa75b9c41d7387daecd447b 100644
--- a/debian/compat
+++ b/debian/compat
@@ -1 +1 @@
-9
+12
diff --git a/debian/control b/debian/control
index 54f71deb5eb99127d33b62eeb2c25ae38aef37a8..db5dc5d6adc8a82274df42d5484985bea2181b4c 100644
--- a/debian/control
+++ b/debian/control
@@ -3,7 +3,7 @@ Section: ruby
 Priority: optional
 Maintainer: Debian Ruby Extras Maintainers <pkg-ruby-extras-maintainers@lists.alioth.debian.org>
 Uploaders: Balint Reczey <balint@balintreczey.hu>
-Build-Depends: debhelper (>= 9~),
+Build-Depends: debhelper (>= 12~),
                gem2deb,
                ruby-shoulda,
                ruby-test-unit