diff --git a/debian/changelog b/debian/changelog
index cf6924091..20eca0155 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+ikiwiki (3.20140917) UNRELEASED; urgency=medium
+
+  * Build-depend on libmagickcore-6.q16-2-extra | libmagickcore-extra
+    so we can thumbnail SVGs in the docwiki
+
+ -- Simon McVittie <smcv@debian.org>  Tue, 16 Sep 2014 11:21:16 +0100
+
 ikiwiki (3.20140916) unstable; urgency=low
 
   * Don't double-decode CGI submissions with Encode.pm >= 2.53,
diff --git a/debian/control b/debian/control
index 55e01009a..5b9d55c4d 100644
--- a/debian/control
+++ b/debian/control
@@ -8,7 +8,8 @@ Build-Depends-Indep: dpkg-dev (>= 1.9.0), libxml-simple-perl,
   libhtml-scrubber-perl, wdg-html-validator,
   libhtml-parser-perl, liburi-perl (>= 1.36), perlmagick, po4a (>= 0.34),
   libfile-chdir-perl, libyaml-libyaml-perl, python-support, librpc-xml-perl,
-  libcgi-session-perl, ghostscript
+  libcgi-session-perl, ghostscript,
+  libmagickcore-6.q16-2-extra | libmagickcore-extra
 Maintainer: Joey Hess <joeyh@debian.org>
 Uploaders: Josh Triplett <josh@freedesktop.org>,
   Simon McVittie <smcv@debian.org>