diff --git a/.drone.yml b/.drone.yml
index e0bc2f7026..5da6083eb7 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -25,12 +25,6 @@ services:
 
 matrix:
     include:
-        - IMAGE: python:2.7
-          TOXENV: py27
-          DATABASE: sqlite
-        - IMAGE: python:2.7
-          TOXENV: py27
-          DATABASE: postgresql
         - IMAGE: python:3.4
           TOXENV: py34
           DATABASE: sqlite
diff --git a/CHANGELOG b/CHANGELOG
index 58366b56de..fe06ef0079 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,5 @@
+* Remove support for Python 2.7
+
 Version 4.8.0 - 2018-04-23
 * Bug fixes (see mercurial logs for details)
 * Check pending payment to erase party
diff --git a/INSTALL b/INSTALL
index 75892303aa..223fb79ab5 100644
--- a/INSTALL
+++ b/INSTALL
@@ -4,7 +4,7 @@ Installing trytond_account_payment
 Prerequisites
 -------------
 
- * Python 2.7 or later (http://www.python.org/)
+ * Python 3.4 or later (http://www.python.org/)
  * trytond (http://www.tryton.org/)
  * trytond_party (http://www.tryton.org/)
  * trytond_account (http://www.tryton.org/)
diff --git a/account.py b/account.py
index 09a43f3ed7..7729564d26 100644
--- a/account.py
+++ b/account.py
@@ -24,8 +24,7 @@ __all__ = ['MoveLine', 'PayLine', 'PayLineAskJournal',
     'Invoice']
 
 
-class MoveLine:
-    __metaclass__ = PoolMeta
+class MoveLine(metaclass=PoolMeta):
     __name__ = 'account.move.line'
     payment_amount = fields.Function(fields.Numeric('Payment Amount',
             digits=(16,
@@ -63,7 +62,7 @@ class MoveLine:
         super(MoveLine, cls).__setup__()
         cls._buttons.update({
                 'pay': {
-                    'invisible': ~Eval('payment_kind').in_(dict(KINDS).keys()),
+                    'invisible': ~Eval('payment_kind').in_(list(dict(KINDS).keys())),
                     'depends': ['payment_kind'],
                     },
                 'payment_block': {
@@ -262,7 +261,7 @@ class PayLine(Wizard):
             values['journal'] = journal.id
         values['company'] = company.id
         values['currency'] = currency.id
-        values['journals'] = [j.id for j in self._get_journals().itervalues()]
+        values['journals'] = [j.id for j in self._get_journals().values()]
         return values
 
     def get_payment(self, line, journals):
@@ -306,8 +305,7 @@ class PayLine(Wizard):
             }
 
 
-class Configuration:
-    __metaclass__ = PoolMeta
+class Configuration(metaclass=PoolMeta):
     __name__ = 'account.configuration'
     payment_group_sequence = fields.MultiValue(fields.Many2One(
             'ir.sequence', 'Payment Group Sequence', required=True,
@@ -364,8 +362,7 @@ class ConfigurationPaymentGroupSequence(ModelSQL, CompanyValueMixin):
             return None
 
 
-class Invoice:
-    __metaclass__ = PoolMeta
+class Invoice(metaclass=PoolMeta):
     __name__ = 'account.invoice'
 
     payment_direct_debit = fields.Boolean("Direct Debit",
diff --git a/party.py b/party.py
index f681e50ee0..20d36113a0 100644
--- a/party.py
+++ b/party.py
@@ -9,8 +9,7 @@ payment_direct_debit = fields.Boolean(
     "Direct Debit", help="Check if supplier does direct debit.")
 
 
-class Party:
-    __metaclass__ = PoolMeta
+class Party(metaclass=PoolMeta):
     __name__ = 'party.party'
 
     payment_direct_debit = fields.MultiValue(payment_direct_debit)
@@ -30,8 +29,7 @@ class PartyPaymentDirectDebit(ModelSQL, CompanyValueMixin):
     payment_direct_debit = payment_direct_debit
 
 
-class PartyReplace:
-    __metaclass__ = PoolMeta
+class PartyReplace(metaclass=PoolMeta):
     __name__ = 'party.replace'
 
     @classmethod
@@ -41,8 +39,7 @@ class PartyReplace:
             ]
 
 
-class PartyErase:
-    __metaclass__ = PoolMeta
+class PartyErase(metaclass=PoolMeta):
     __name__ = 'party.erase'
 
     @classmethod
diff --git a/setup.py b/setup.py
index 2e0203fd47..f0fd6b54df 100644
--- a/setup.py
+++ b/setup.py
@@ -1,15 +1,12 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
 
-from setuptools import setup
-import re
-import os
 import io
-try:
-    from configparser import ConfigParser
-except ImportError:
-    from ConfigParser import ConfigParser
+import os
+import re
+from configparser import ConfigParser
+from setuptools import setup
 
 
 def read(fname):
@@ -27,6 +24,7 @@ def get_require_version(name):
         major_version, minor_version + 1)
     return require
 
+
 config = ConfigParser()
 config.readfp(open('tryton.cfg'))
 info = dict(config.items('tryton'))
@@ -104,7 +102,6 @@ setup(name=name,
         'Natural Language :: Slovenian',
         'Natural Language :: Spanish',
         'Operating System :: OS Independent',
-        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
@@ -114,6 +111,7 @@ setup(name=name,
         'Topic :: Office/Business :: Financial :: Accounting',
         ],
     license='GPL-3',
+    python_requires='>=3.4',
     install_requires=requires,
     dependency_links=dependency_links,
     zip_safe=False,
@@ -124,6 +122,4 @@ setup(name=name,
     test_suite='tests',
     test_loader='trytond.test_loader:Loader',
     tests_require=tests_require,
-    use_2to3=True,
-    convert_2to3_doctests=['tests/scenario_account_payment.rst'],
     )
diff --git a/tests/scenario_account_payment.rst b/tests/scenario_account_payment.rst
index 13bd22ccd8..3dcc3deade 100644
--- a/tests/scenario_account_payment.rst
+++ b/tests/scenario_account_payment.rst
@@ -76,12 +76,12 @@ Partially pay line::
     >>> payment.amount = Decimal('20.00')
     >>> payment.click('approve')
     >>> payment.state
-    u'approved'
+    'approved'
     >>> process_payment = Wizard('account.payment.process', [payment])
     >>> process_payment.execute('process')
     >>> payment.reload()
     >>> payment.state
-    u'processing'
+    'processing'
     >>> line.reload()
     >>> line.payment_amount
     Decimal('30.00')
@@ -102,7 +102,7 @@ Partially fail to pay the remaining::
     >>> payment.reload()
     >>> payment.click('fail')
     >>> payment.state
-    u'failed'
+    'failed'
     >>> line.reload()
     >>> line.payment_amount
     Decimal('30.00')
diff --git a/tests/scenario_account_payment_invoice.rst b/tests/scenario_account_payment_invoice.rst
index 104d8e4b72..6d3cfa8141 100644
--- a/tests/scenario_account_payment_invoice.rst
+++ b/tests/scenario_account_payment_invoice.rst
@@ -65,7 +65,7 @@ Create invoice::
     >>> line.unit_price = Decimal('100')
     >>> invoice.click('post')
     >>> invoice.state
-    u'posted'
+    'posted'
     >>> invoice.amount_to_pay
     Decimal('100.00')
     >>> line_to_pay, = invoice.lines_to_pay
@@ -145,7 +145,7 @@ Create invoice::
     >>> line.unit_price = Decimal('50')
     >>> invoice.click('post')
     >>> invoice.state
-    u'posted'
+    'posted'
     >>> line_to_pay, = invoice.lines_to_pay
     >>> bool(line_to_pay.payment_direct_debit)
     True
diff --git a/tox.ini b/tox.ini
index 2082ab4f4d..adbcbf8431 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,11 +1,11 @@
 [tox]
-envlist = {py27,py34,py35,py36}-{sqlite,postgresql},pypy-{sqlite,postgresql}
+envlist = {py34,py35,py36}-{sqlite,postgresql},pypy3-{sqlite,postgresql}
 
 [testenv]
 commands = {envpython} setup.py test
 deps =
-    {py27,py34,py35,py36}-postgresql: psycopg2 >= 2.5
-    pypy-postgresql: psycopg2cffi >= 2.5
+    {py34,py35,py36}-postgresql: psycopg2 >= 2.5
+    pypy3-postgresql: psycopg2cffi >= 2.5
     sqlite: sqlitebck
 setenv =
     sqlite: TRYTOND_DATABASE_URI={env:SQLITE_URI:sqlite://}