diff -pruN 2.1.8+ds-4/debian/changelog 2.1.8+ds-5/debian/changelog
--- 2.1.8+ds-4/debian/changelog	2020-11-01 17:49:47.000000000 +0000
+++ 2.1.8+ds-5/debian/changelog	2022-07-31 06:25:08.000000000 +0000
@@ -1,3 +1,14 @@
+ncview (2.1.8+ds-5) unstable; urgency=medium
+
+  * Bump watch file version to 4.
+  * Bump Standards-Version to 4.6.1, no changes.
+  * Bump debhelper compat to 12, no changes.
+  * Update lintian overrides.
+  * Change libnetpbm10-dev build dependency to libnetpbm-dev.
+    (closes: #1016401)
+
+ -- Bas Couwenberg <sebastic@debian.org>  Sun, 31 Jul 2022 08:25:08 +0200
+
 ncview (2.1.8+ds-4) unstable; urgency=medium
 
   * Bump Standards-Version to 4.5.0, no changes.
diff -pruN 2.1.8+ds-4/debian/compat 2.1.8+ds-5/debian/compat
--- 2.1.8+ds-4/debian/compat	2020-03-19 18:41:13.000000000 +0000
+++ 2.1.8+ds-5/debian/compat	1970-01-01 00:00:00.000000000 +0000
@@ -1 +0,0 @@
-10
diff -pruN 2.1.8+ds-4/debian/control 2.1.8+ds-5/debian/control
--- 2.1.8+ds-4/debian/control	2020-03-19 18:41:20.000000000 +0000
+++ 2.1.8+ds-5/debian/control	2022-07-10 17:03:15.000000000 +0000
@@ -5,16 +5,16 @@ Uploaders: Magnus Hagdorn <magnus.hagdor
            Bas Couwenberg <sebastic@debian.org>
 Section: science
 Priority: optional
-Build-Depends: debhelper (>= 10~),
+Build-Depends: debhelper-compat (= 12),
                chrpath,
                libexpat1-dev,
                libnetcdf-dev,
-               libnetpbm10-dev,
+               libnetpbm-dev,
                libpng-dev,
                libudunits2-dev,
                libxaw7-dev,
                netcdf-bin
-Standards-Version: 4.5.0
+Standards-Version: 4.6.1
 Vcs-Browser: https://salsa.debian.org/debian-gis-team/ncview
 Vcs-Git: https://salsa.debian.org/debian-gis-team/ncview.git
 Homepage: http://meteora.ucsd.edu/~pierce/ncview_home_page.html
diff -pruN 2.1.8+ds-4/debian/source/lintian-overrides 2.1.8+ds-5/debian/source/lintian-overrides
--- 2.1.8+ds-4/debian/source/lintian-overrides	2020-11-01 17:38:02.000000000 +0000
+++ 2.1.8+ds-5/debian/source/lintian-overrides	2021-09-12 17:15:20.000000000 +0000
@@ -1,3 +1,3 @@
 # Releases not available via HTTPS
-debian-watch-uses-insecure-uri ftp://cirrus.ucsd.edu/pub/ncview/
+debian-watch-uses-insecure-uri ftp://cirrus.ucsd.edu/pub/ncview/ *
 
diff -pruN 2.1.8+ds-4/debian/watch 2.1.8+ds-5/debian/watch
--- 2.1.8+ds-4/debian/watch	2015-11-06 19:28:08.000000000 +0000
+++ 2.1.8+ds-5/debian/watch	2020-11-06 18:34:12.000000000 +0000
@@ -1,4 +1,4 @@
-version=3
+version=4
 opts=passive,\
 dversionmangle=s/\+(debian|dfsg|ds|deb)\d*$//,\
 uversionmangle=s/(\d)[_\.\-\+]?((RC|rc|pre|dev|beta|alpha)\d*)$/$1~$2/;s/RC/rc/,\