diff -Nru ply-3.11/debian/changelog ply-3.11/debian/changelog
--- ply-3.11/debian/changelog	2019-12-17 12:39:28.000000000 +0000
+++ ply-3.11/debian/changelog	2021-06-01 15:05:04.000000000 +0000
@@ -1,3 +1,9 @@
+ply (3.11-3ubuntu0.1) focal; urgency=medium
+
+  * Use python2.7 in debian/rules, to generate Provides. (LP: #1920567)
+
+ -- Stefano Rivera <stefanor@ubuntu.com>  Tue, 01 Jun 2021 11:05:04 -0400
+
 ply (3.11-3build1) focal; urgency=medium
 
   * No-change rebuild to generate dependencies on python2.
diff -Nru ply-3.11/debian/control ply-3.11/debian/control
--- ply-3.11/debian/control	2018-07-25 10:40:59.000000000 +0000
+++ ply-3.11/debian/control	2021-06-01 15:05:04.000000000 +0000
@@ -1,7 +1,8 @@
 Source: ply
 Section: python
 Priority: optional
-Maintainer: JCF Ploemen (jcfp) <linux@jcf.pm>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: JCF Ploemen (jcfp) <linux@jcf.pm>
 Uploaders: Debian Python Modules Team <python-modules-team@lists.alioth.debian.org>
 Build-Depends:
  debhelper (>= 11~),
diff -Nru ply-3.11/debian/rules ply-3.11/debian/rules
--- ply-3.11/debian/rules	2018-07-25 10:40:59.000000000 +0000
+++ ply-3.11/debian/rules	2021-06-01 15:05:04.000000000 +0000
@@ -17,9 +17,9 @@
 	pod2man debian/dh_python3-ply > dh_python3-ply.1
 
 override_dh_gencontrol:
-	echo "python-ply:Provides=$$(PYTHONPATH=. python debian/virtual-packages.py python-ply)" \
+	echo "python-ply:Provides=$$(PYTHONPATH=. python2.7 debian/virtual-packages.py python-ply)" \
 		>> debian/python-ply.substvars
-	echo "python3-ply:Provides=$$(PYTHONPATH=. python debian/virtual-packages.py python3-ply)" \
+	echo "python3-ply:Provides=$$(PYTHONPATH=. python2.7 debian/virtual-packages.py python3-ply)" \
 		>> debian/python3-ply.substvars
 	dh_gencontrol