diff -Nru mkosi-5/debian/changelog mkosi-5/debian/changelog
--- mkosi-5/debian/changelog	2019-07-08 03:30:49.000000000 +0100
+++ mkosi-5/debian/changelog	2021-04-09 08:44:19.000000000 +0100
@@ -1,3 +1,9 @@
+mkosi (5-1ubuntu1) UNRELEASED; urgency=medium
+
+  * d/p/actually-support-Ubuntu.patch for debootstrap (LP: #1923145)
+
+ -- Tj <ubuntu@iam.tj>  Fri, 09 Apr 2021 08:44:19 +0100
+
 mkosi (5-1) unstable; urgency=medium
 
   * New upstream release
diff -Nru mkosi-5/debian/patches/actually-support-Ubuntu.patch mkosi-5/debian/patches/actually-support-Ubuntu.patch
--- mkosi-5/debian/patches/actually-support-Ubuntu.patch	1970-01-01 01:00:00.000000000 +0100
+++ mkosi-5/debian/patches/actually-support-Ubuntu.patch	2021-04-09 08:42:54.000000000 +0100
@@ -0,0 +1,11 @@
+--- a/mkosi	2019-07-08 03:30:49.000000000 +0100
++++ b/mkosi	2021-04-09 08:32:58.801226388 +0100
+@@ -3187,7 +3187,7 @@
+     if dist_id is not None:
+         d = Distribution.__members__.get(dist_id, None)
+ 
+-    if d == Distribution.debian and (version_codename or extracted_codename):
++    if d in (Distribution.debian, Distribution.ubuntu) and (version_codename or extracted_codename):
+         # debootstrap needs release codenames, not version numbers
+         if version_codename:
+             version_id = version_codename
diff -Nru mkosi-5/debian/patches/series mkosi-5/debian/patches/series
--- mkosi-5/debian/patches/series	2019-07-08 03:30:49.000000000 +0100
+++ mkosi-5/debian/patches/series	2021-04-09 08:43:32.000000000 +0100
@@ -1 +1,2 @@
 mkosi.md-convert-emdash-into-regular-dash.patch
+actually-support-Ubuntu.patch