diff -Nru dask-sphinx-theme-1.3.1/debian/changelog dask-sphinx-theme-1.3.1/debian/changelog
--- dask-sphinx-theme-1.3.1/debian/changelog	2020-03-26 04:54:14.000000000 +0000
+++ dask-sphinx-theme-1.3.1/debian/changelog	2020-10-19 17:22:07.000000000 +0000
@@ -1,3 +1,10 @@
+dask-sphinx-theme (1.3.1-2ubuntu1) groovy; urgency=medium
+
+  * Remove the need for html5shiv, which was dropped from
+    sphinx-rtd theme, to avoid a FTBFS in dask
+
+ -- Graham Inggs <ginggs@ubuntu.com>  Mon, 19 Oct 2020 17:22:07 +0000
+
 dask-sphinx-theme (1.3.1-2) unstable; urgency=medium
 
   * add skip-custom-js.patch (Closes: #954623) Upstream included a
diff -Nru dask-sphinx-theme-1.3.1/debian/control dask-sphinx-theme-1.3.1/debian/control
--- dask-sphinx-theme-1.3.1/debian/control	2020-03-04 04:42:40.000000000 +0000
+++ dask-sphinx-theme-1.3.1/debian/control	2020-10-19 12:33:58.000000000 +0000
@@ -1,5 +1,6 @@
 Source: dask-sphinx-theme
-Maintainer: Diane Trout <diane@ghic.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Diane Trout <diane@ghic.org>
 Section: python
 Priority: optional
 Build-Depends: debhelper-compat (= 11),
diff -Nru dask-sphinx-theme-1.3.1/debian/patches/no-html5shiv.patch dask-sphinx-theme-1.3.1/debian/patches/no-html5shiv.patch
--- dask-sphinx-theme-1.3.1/debian/patches/no-html5shiv.patch	1970-01-01 00:00:00.000000000 +0000
+++ dask-sphinx-theme-1.3.1/debian/patches/no-html5shiv.patch	2020-10-19 17:21:25.000000000 +0000
@@ -0,0 +1,17 @@
+Description: Remove the need for html5shiv, which was dropped from
+ sphinx-rtd theme, to avoid a FTBFS in dask
+Author: Graham Inggs <ginggs@debian.org>
+Last-Update: 2020-10-19
+
+--- a/dask_sphinx_theme/layout.html
++++ b/dask_sphinx_theme/layout.html
+@@ -49,9 +49,6 @@
+ 
+   {# JAVASCRIPTS #}
+   {%- block scripts %}
+-  <!--[if lt IE 9]>
+-    <script src="{{ pathto('_static/js/html5shiv.min.js', 1) }}"></script>
+-  <![endif]-->
+   {%- if not embedded %}
+   {# XXX Sphinx 1.8.0 made this an external js-file, quick fix until we refactor the template to inherert more blocks directly from sphinx #}
+     {% if sphinx_version >= "1.8.0" %}
diff -Nru dask-sphinx-theme-1.3.1/debian/patches/series dask-sphinx-theme-1.3.1/debian/patches/series
--- dask-sphinx-theme-1.3.1/debian/patches/series	2020-03-26 04:51:21.000000000 +0000
+++ dask-sphinx-theme-1.3.1/debian/patches/series	2020-10-19 12:05:23.000000000 +0000
@@ -1 +1,2 @@
 skip-custom-js.patch
+no-html5shiv.patch