diff --git a/debian/changelog b/debian/changelog
index 63eea59..5291a2b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,11 @@
+lightdm-gtk-greeter-settings (1.2.1-2~) UNRELEASED; urgency=medium
+
+  * Add patch fix-pkexec-shebang.patch to work around bashism in
+    lightdm-gtk-greeter-settings-pkexec causing a crash if -s is given
+    (LP: #1613967)
+
+ -- James Lu <bitflip3@gmail.com>  Sat, 26 Nov 2016 12:52:36 -0800
+
 lightdm-gtk-greeter-settings (1.2.1-1) unstable; urgency=medium
 
   * New upstream release.
diff --git a/debian/patches/fix-pkexec-shebang.patch b/debian/patches/fix-pkexec-shebang.patch
new file mode 100644
index 0000000..238f839
--- /dev/null
+++ b/debian/patches/fix-pkexec-shebang.patch
@@ -0,0 +1,16 @@
+Subject: Work around bashism in lightdm-gtk-greeter-settings-pkexec causing a crash if -s is given
+Author: James Lu <bitflip3@gmail.com>
+Forwarded: https://code.launchpad.net/~tacocat/lightdm-gtk-greeter-settings/fix-pkexec-shebang/+merge/304321
+Last-Update: 2016-11-26
+Bug: https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter-settings/+bug/1613967
+
+Index: lightdm-gtk-greeter-settings/bin/lightdm-gtk-greeter-settings-pkexec
+===================================================================
+--- lightdm-gtk-greeter-settings.orig/bin/lightdm-gtk-greeter-settings-pkexec	2016-11-26 12:51:20.105648723 -0800
++++ lightdm-gtk-greeter-settings/bin/lightdm-gtk-greeter-settings-pkexec	2016-11-26 12:51:48.753154350 -0800
+@@ -1,4 +1,4 @@
+-#!/bin/sh
++#!/bin/bash
+ 
+ APP_PATH="/usr/bin/lightdm-gtk-greeter-settings"
+ 
diff --git a/debian/patches/series b/debian/patches/series
index ce8efdd..eafe564 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -1 +1,2 @@
+fix-pkexec-shebang.patch
 reproducible-setup