diff -Nru dosage-2.15/debian/changelog dosage-2.15/debian/changelog
--- dosage-2.15/debian/changelog	2016-06-29 12:23:28.000000000 +0000
+++ dosage-2.15/debian/changelog	2019-09-02 16:25:22.000000000 +0000
@@ -1,3 +1,12 @@
+dosage (2.15-3) unstable; urgency=medium
+
+  * QA upload.
+  * switch to python3; Closes: #936439
+  * debian/control
+    - bump Standards-Version to 4.4.0 (no changes needed)
+
+ -- Sandro Tosi <morph@debian.org>  Mon, 02 Sep 2019 12:25:22 -0400
+
 dosage (2.15-2) unstable; urgency=medium
 
   * QA upload.
diff -Nru dosage-2.15/debian/control dosage-2.15/debian/control
--- dosage-2.15/debian/control	2016-06-29 11:59:00.000000000 +0000
+++ dosage-2.15/debian/control	2019-09-02 16:23:16.000000000 +0000
@@ -4,18 +4,17 @@
 Maintainer: Debian QA Group <packages@qa.debian.org>
 Build-Depends: debhelper (>= 9),
                dh-python,
-               python-all
-X-Python-Version: >= 2.7
-Standards-Version: 3.9.8
+               python3
+Standards-Version: 4.4.0
 Homepage: http://dosage.rocks
 
 Package: dosage
 Architecture: all
-Depends: python-requests,
-         ${python:Depends},
+Depends: python3-requests,
+         ${python3:Depends},
          ${misc:Depends}
-Suggests: python-argcomplete
-Provides: ${python:Provides}
+Suggests: python3-argcomplete
+Provides: ${python3:Provides}
 Description: comic strip downloader and archiver
  Dosage downloads comic strips. It can retrieve just the latest
  strip in a comic, catch-up to the last strip downloaded, or download a
diff -Nru dosage-2.15/debian/dosage.postinst dosage-2.15/debian/dosage.postinst
--- dosage-2.15/debian/dosage.postinst	2014-07-03 20:05:00.000000000 +0000
+++ dosage-2.15/debian/dosage.postinst	2019-09-02 14:46:29.000000000 +0000
@@ -16,12 +16,10 @@
 # remove old plugin cache files
 # this code can be removed after Debian 8.0 "jessie" is released, since
 # the dropin.cache files are still in Debian 7.0 "wheezy".
-for pyver in $(pyversions -s); do
-  f=/usr/lib/${pyver}/dist-packages/dosage/plugins/dropin.cache
-  if [ -f $f ]; then
-    rm -f $f || true
-  fi
-done
+f=/usr/lib/${pyver}/dist-packages/dosage/plugins/dropin.cache
+if [ -f $f ]; then
+  rm -f $f || true
+fi
 
 #DEBHELPER#
 
diff -Nru dosage-2.15/debian/pycompat dosage-2.15/debian/pycompat
--- dosage-2.15/debian/pycompat	2014-07-03 20:05:00.000000000 +0000
+++ dosage-2.15/debian/pycompat	1970-01-01 00:00:00.000000000 +0000
@@ -1 +0,0 @@
-2
diff -Nru dosage-2.15/debian/rules dosage-2.15/debian/rules
--- dosage-2.15/debian/rules	2016-06-29 11:57:25.000000000 +0000
+++ dosage-2.15/debian/rules	2019-09-02 16:21:58.000000000 +0000
@@ -1,35 +1,24 @@
 #!/usr/bin/make -f
 
 %:
-	dh $@ --with python2
+	dh $@ --with python3 --buildsystem=pybuild
 
 override_dh_auto_configure:
 # make sure the manifest is built
-	python setup.py sdist --manifest-only
-
-override_dh_auto_build:
-# force usage of setup.py over Makefile
-	dh_auto_build --buildsystem python_distutils
+	python3 setup.py sdist --manifest-only
 
 override_dh_installchangelogs:
-# install custom changelog
 	dh_installchangelogs doc/changelog.txt
 
 ROOTDIR=$(CURDIR)/debian/dosage
 
 override_dh_auto_install:
-# force usage of setup.py over Makefile
-	dh_auto_install --buildsystem python_distutils
-# install bash_completion script
+	python3 setup.py install --root=debian/dosage --install-layout=deb;
 	install -m 644 doc/dosage-completion $(ROOTDIR)/usr/share/bash-completion/completions
 
 override_dh_clean:
 # clean generated files
-	dh_clean _Dosage_configdata.py
+	dh_clean _Dosage_configdata.py _dosage_configdata.py
 
 override_dh_auto_test:
 # do not run test suite when building
-
-override_dh_builddeb:
-# use xz for debian binary package compression
-	dh_builddeb -- -Zxz