diff -Nru tryton-modules-analytic-purchase-4.4.0/debian/changelog tryton-modules-analytic-purchase-4.4.0/debian/changelog
--- tryton-modules-analytic-purchase-4.4.0/debian/changelog	2017-08-17 14:02:40.000000000 +0000
+++ tryton-modules-analytic-purchase-4.4.0/debian/changelog	2017-08-18 10:35:21.000000000 +0000
@@ -1,3 +1,9 @@
+tryton-modules-analytic-purchase (4.4.0-4) unstable; urgency=medium
+
+  * Switch to Python3.
+
+ -- Mathias Behrle <mathiasb@m9s.biz>  Fri, 18 Aug 2017 12:35:21 +0200
+
 tryton-modules-analytic-purchase (4.4.0-3) unstable; urgency=medium
 
   * Use the preferred https URL format in the copyright file.
diff -Nru tryton-modules-analytic-purchase-4.4.0/debian/control tryton-modules-analytic-purchase-4.4.0/debian/control
--- tryton-modules-analytic-purchase-4.4.0/debian/control	2017-08-17 13:13:33.000000000 +0000
+++ tryton-modules-analytic-purchase-4.4.0/debian/control	2017-08-18 09:33:11.000000000 +0000
@@ -6,24 +6,23 @@
 Build-Depends:
  debhelper (>= 9),
  dh-python,
- python,
- python-setuptools,
+ python3,
+ python3-setuptools,
 Standards-Version: 4.0.1
 Homepage: http://www.tryton.org/
 Vcs-Browser: https://anonscm.debian.org/cgit/tryton/tryton-modules-analytic-purchase.git
 Vcs-Git: https://anonscm.debian.org/cgit/tryton/tryton-modules-analytic-purchase.git
-X-Python-Version: >= 2.7
 
 Package: tryton-modules-analytic-purchase
 Architecture: all
 Depends:
- python-pkg-resources,
+ python3-pkg-resources,
  tryton-modules-analytic-account (>= ${version:major}),
  tryton-modules-analytic-invoice (>= 1:${version:major}),
  tryton-modules-purchase (>= ${version:major}),
  tryton-server (>= ${version:major}),
  ${misc:Depends},
- ${python:Depends},
+ ${python3:Depends},
 Description: Tryton Application Platform (Analytic Purchase Module)
  Tryton is a high-level general purpose application platform. It is the base
  of a complete business solution as well as a comprehensive health and hospital
diff -Nru tryton-modules-analytic-purchase-4.4.0/debian/rules tryton-modules-analytic-purchase-4.4.0/debian/rules
--- tryton-modules-analytic-purchase-4.4.0/debian/rules	2017-08-17 10:11:22.000000000 +0000
+++ tryton-modules-analytic-purchase-4.4.0/debian/rules	2017-08-18 10:26:56.000000000 +0000
@@ -1,6 +1,6 @@
 #!/usr/bin/make -f
 
-MAJOR := $(shell python setup.py --version | awk -F "." '{print $$1 "." $$2}')
+MAJOR := $(shell python3 setup.py --version | awk -F "." '{print $$1 "." $$2}')
 
 # Don't run tests for Tryton modules, they possibly depend on other modules
 # of the same version, that are not yet available at build time from the archive
@@ -9,7 +9,7 @@
 export PYBUILD_DISABLE=test
 
 %:
-	dh $@ --with python2 --buildsystem=pybuild
+	dh $@ --with python3 --buildsystem=pybuild
 
 override_dh_gencontrol:
 	dh_gencontrol -- -Vversion:major="$(MAJOR)"