diff -Nru w3m-el-1.4.632+0.20181112/debian/changelog w3m-el-1.4.632+0.20181112/debian/changelog
--- w3m-el-1.4.632+0.20181112/debian/changelog	2020-04-21 10:42:33.000000000 +0000
+++ w3m-el-1.4.632+0.20181112/debian/changelog	2020-07-05 15:28:13.000000000 +0000
@@ -1,3 +1,11 @@
+w3m-el (1.4.632+0.20181112-4) unstable; urgency=medium
+
+  * New patch 070_duckduckgo.patch to update URL for DuckDuckGo
+  * Update debian/watch
+  * Update debhelper-compat to 13
+
+ -- Tatsuya Kinoshita <tats@debian.org>  Mon, 06 Jul 2020 00:28:13 +0900
+
 w3m-el (1.4.632+0.20181112-3) unstable; urgency=medium
 
   * New patch 060_mailcap.patch to prevent w3m-content-type-alist takes ages
diff -Nru w3m-el-1.4.632+0.20181112/debian/control w3m-el-1.4.632+0.20181112/debian/control
--- w3m-el-1.4.632+0.20181112/debian/control	2020-04-21 10:40:47.000000000 +0000
+++ w3m-el-1.4.632+0.20181112/debian/control	2020-07-05 15:25:41.000000000 +0000
@@ -2,7 +2,7 @@
 Section: lisp
 Priority: optional
 Maintainer: Tatsuya Kinoshita <tats@debian.org>
-Build-Depends: debhelper-compat (= 12)
+Build-Depends: debhelper-compat (= 13)
 Build-Depends-Indep: emacs-nox | emacs | emacs25 | emacs24 | emacs23, autoconf
 Homepage: https://emacs-w3m.github.io/
 Vcs-Browser: https://salsa.debian.org/debian/w3m-el
diff -Nru w3m-el-1.4.632+0.20181112/debian/patches/070_duckduckgo.patch w3m-el-1.4.632+0.20181112/debian/patches/070_duckduckgo.patch
--- w3m-el-1.4.632+0.20181112/debian/patches/070_duckduckgo.patch	1970-01-01 00:00:00.000000000 +0000
+++ w3m-el-1.4.632+0.20181112/debian/patches/070_duckduckgo.patch	2020-07-05 15:10:12.000000000 +0000
@@ -0,0 +1,19 @@
+Subject: Update url for duckduckgo search engine
+Origin: upstream, https://github.com/emacs-w3m/emacs-w3m/commit/09d8b32b3f103bb19f9bbb87ecccd2f32553cba8
+Bug: https://github.com/emacs-w3m/emacs-w3m/issues/78
+
+2020-07-01  Boruch Baum  <boruch_baum@gmx.com>
+
+	* w3m-search.el (w3m-search-engine-alist): Update url for duckduckgo.
+
+--- a/w3m-search.el
++++ b/w3m-search.el
+@@ -214,7 +214,7 @@ __mk_ja_JP=%%83J%%83%%5E%%83J%%83i&url=search-alias%%3Daps&field-keywords=%s"
+       ("ja.wikipedia" "https://ja.wikipedia.org/wiki/Special:Search?search=%s"
+        utf-8)
+       ("msdn" "https://search.msdn.microsoft.com/search/default.aspx?query=%s")
+-      ("duckduckgo" "https://duckduckgo.com/?q=%s" utf-8)))
++      ("duckduckgo" "https://lite.duckduckgo.com/lite" utf-8 "q=%s")))
+   "*An alist of search engines.
+ Each element looks like (ENGINE ACTION CODING POST-DATA)
+ ENGINE is a string, the name of the search engine.
diff -Nru w3m-el-1.4.632+0.20181112/debian/patches/series w3m-el-1.4.632+0.20181112/debian/patches/series
--- w3m-el-1.4.632+0.20181112/debian/patches/series	2020-04-18 16:29:57.000000000 +0000
+++ w3m-el-1.4.632+0.20181112/debian/patches/series	2020-07-05 15:00:51.000000000 +0000
@@ -4,3 +4,4 @@
 040_nnheader.patch
 050_symlink.patch
 060_mailcap.patch
+070_duckduckgo.patch
diff -Nru w3m-el-1.4.632+0.20181112/debian/watch w3m-el-1.4.632+0.20181112/debian/watch
--- w3m-el-1.4.632+0.20181112/debian/watch	2007-11-25 01:56:30.000000000 +0000
+++ w3m-el-1.4.632+0.20181112/debian/watch	2020-07-05 15:20:20.000000000 +0000
@@ -1,3 +1,4 @@
-version=3
-opts="uversionmangle=s/beta/~beta/;s/rc/~rc/" \
-http://emacs-w3m.namazu.org/ emacs-w3m-([0-9]+\..*)\.tar\.gz debian uupdate
+version=4
+opts="filenamemangle=s%(?:.*/)?w3m-el-snapshot_(\d[\d.+a-z]*)\.orig\.tar\.([a-z]+)%w3m-el-$1.tar.$2%" \
+https://packages.debian.org/source/stable/w3m-el-snapshot \
+(?:.*/)?w3m-el-snapshot_(\d[\d.+a-z]*)\.orig\.tar\.[a-z]+ debian uupdate