diff -Nru memtest86+-5.01/debian/changelog memtest86+-5.01/debian/changelog
--- memtest86+-5.01/debian/changelog	2020-05-08 15:06:31.000000000 +0000
+++ memtest86+-5.01/debian/changelog	2020-08-18 10:46:05.000000000 +0000
@@ -1,8 +1,8 @@
-memtest86+ (5.01-3.1ubuntu2) focal; urgency=medium
+memtest86+ (5.01-3.1ubuntu2.1) focal; urgency=medium
 
-  * Nochange rebuild so launchpad can import the translations (lp: #1874125)
+  * Close FD 3 when invoking update-grub (LP: #1876506)
 
- -- Sebastien Bacher <seb128@ubuntu.com>  Fri, 08 May 2020 17:06:31 +0200
+ -- Julian Andres Klode <juliank@ubuntu.com>  Tue, 18 Aug 2020 12:46:05 +0200
 
 memtest86+ (5.01-3.1ubuntu1) focal; urgency=low
 
diff -Nru memtest86+-5.01/debian/postinst memtest86+-5.01/debian/postinst
--- memtest86+-5.01/debian/postinst	2019-08-16 04:13:11.000000000 +0000
+++ memtest86+-5.01/debian/postinst	2020-08-18 10:45:58.000000000 +0000
@@ -13,7 +13,7 @@
     fi
 
     if [ -e /boot/grub/grub.cfg ] && type update-grub >/dev/null 2>&1 && ! systemd-detect-virt --quiet --container; then
-	update-grub
+	update-grub 3>&-
     fi
 fi