diff -Nru lv-4.51/debian/changelog lv-4.51/debian/changelog
--- lv-4.51/debian/changelog	2019-06-14 09:54:50.000000000 +0000
+++ lv-4.51/debian/changelog	2019-08-03 03:39:51.000000000 +0000
@@ -1,3 +1,11 @@
+lv (4.51-7) unstable; urgency=medium
+
+  * eliminate lintian warning: unused-override
+  * Bump debhelper compatibility level to 12
+  * Update Standards-Version to 4.4.0
+
+ -- HIGUCHI Daisuke (VDR dai) <dai@debian.org>  Sat, 03 Aug 2019 12:39:51 +0900
+
 lv (4.51-6) unstable; urgency=medium
 
   * support zstd automatic decompression (Closes: #930478)
diff -Nru lv-4.51/debian/compat lv-4.51/debian/compat
--- lv-4.51/debian/compat	2018-03-27 12:02:19.000000000 +0000
+++ lv-4.51/debian/compat	2019-08-03 03:35:30.000000000 +0000
@@ -1 +1 @@
-11
+12
diff -Nru lv-4.51/debian/control lv-4.51/debian/control
--- lv-4.51/debian/control	2019-06-14 09:51:52.000000000 +0000
+++ lv-4.51/debian/control	2019-08-03 03:35:51.000000000 +0000
@@ -2,8 +2,8 @@
 Section: text
 Priority: optional
 Maintainer: HIGUCHI Daisuke (VDR dai) <dai@debian.org>
-Build-Depends: debhelper (>= 11~), libncurses5-dev
-Standards-Version: 4.1.3
+Build-Depends: debhelper (>= 12~), libncurses5-dev
+Standards-Version: 4.4.0
 #Homepage: http://www.ff.iij4u.or.jp/~nrt/lv/
 Vcs-Git: https://salsa.debian.org/debian/lv.git
 Vcs-Browser: https://salsa.debian.org/debian/lv
diff -Nru lv-4.51/debian/source/lintian-overrides lv-4.51/debian/source/lintian-overrides
--- lv-4.51/debian/source/lintian-overrides	2018-03-27 12:56:41.000000000 +0000
+++ lv-4.51/debian/source/lintian-overrides	1970-01-01 00:00:00.000000000 +0000
@@ -1 +0,0 @@
-lv source: spelling-error-in-patch-description debian/patches/20051030_%src%_~use_off_t.diff long long (duplicate word) long