diff -Nru cython-0.26.1/debian/changelog cython-0.26.1/debian/changelog
--- cython-0.26.1/debian/changelog	2017-11-01 08:39:00.000000000 +0000
+++ cython-0.26.1/debian/changelog	2017-11-07 11:28:03.000000000 +0000
@@ -1,8 +1,10 @@
-cython (0.26.1-0.3ubuntu1) bionic; urgency=medium
+cython (0.26.1-0.4) unstable; urgency=medium
 
-  * Drop python3.5 dependency
+  * Non-maintainer upload.
+  * Drop build dependencies on versioned pythonX.Y packages.
+  * Set priority of -dbg packages to optional.
 
- -- Gianfranco Costamagna <locutusofborg@debian.org>  Wed, 01 Nov 2017 09:39:00 +0100
+ -- Matthias Klose <doko@debian.org>  Tue, 07 Nov 2017 12:28:03 +0100
 
 cython (0.26.1-0.3) unstable; urgency=medium
 
diff -Nru cython-0.26.1/debian/control cython-0.26.1/debian/control
--- cython-0.26.1/debian/control	2017-11-01 08:38:59.000000000 +0000
+++ cython-0.26.1/debian/control	2017-11-07 11:28:03.000000000 +0000
@@ -14,8 +14,6 @@
                python3-all-dbg,
                python3-numpy (>= 1:1.12.1-3.1) <!nocheck>,
                gdb,
-               python2.7-dev (>= 2.7.14~rc1-1),
-               python3.6-dev (>= 3.6.2-3),
 Standards-Version: 3.9.8
 Homepage: http://cython.org/
 Vcs-Svn: svn://anonscm.debian.org/python-apps/packages/cython/trunk/
@@ -42,7 +40,7 @@
 Package: cython-dbg
 Architecture: any
 Section: debug
-Priority: extra
+Priority: optional
 Depends: ${python:Depends}, ${misc:Depends}, ${shlibs:Depends}, cython (= ${binary:Version})
 Description: C-Extensions for Python - debug build
  This package contains Cython libraries built against versions of
@@ -69,7 +67,7 @@
 Package: cython3-dbg
 Architecture: any
 Section: debug
-Priority: extra
+Priority: optional
 Depends: ${python3:Depends}, ${misc:Depends}, ${shlibs:Depends}, cython3 (= ${binary:Version})
 Description: C-Extensions for Python 3 - debug build
  This package contains Cython libraries built against versions of
@@ -77,6 +75,7 @@
 
 Package: cython-doc
 Architecture: all
+Multi-Arch: foreign
 Section: doc
 Depends: ${misc:Depends}, libjs-jquery, libjs-underscore
 Suggests: cython