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 5630d1979c..3b0e51c470 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)
 
diff --git a/INSTALL b/INSTALL
index 88df24c90c..df252ea35a 100644
--- a/INSTALL
+++ b/INSTALL
@@ -4,7 +4,7 @@ Installing trytond_stock_forecast
 Prerequisites
 -------------
 
- * Python 2.7 or later (http://www.python.org/)
+ * Python 3.4 or later (http://www.python.org/)
  * python-dateutil (http://labix.org/python-dateutil)
  * python-sql (http://code.google.com/p/python-sql/)
  * trytond (http://www.tryton.org/)
diff --git a/forecast.py b/forecast.py
index 3281f12a6d..b158f51bd7 100644
--- a/forecast.py
+++ b/forecast.py
@@ -1,6 +1,6 @@
 # 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 __future__ import division
+
 import datetime
 from dateutil.relativedelta import relativedelta
 import itertools
@@ -496,7 +496,7 @@ class ForecastLine(ModelSQL, ModelView):
                 unit_price, self.uom)
 
         moves = []
-        for day, qty in distribution.iteritems():
+        for day, qty in distribution.items():
             if qty == 0.0:
                 continue
             move = Move()
@@ -521,7 +521,7 @@ class ForecastLine(ModelSQL, ModelView):
 
     def distribute(self, delta, qty):
         'Distribute qty over delta'
-        range_delta = range(delta)
+        range_delta = list(range(delta))
         a = {}.fromkeys(range_delta, 0)
         while qty > 0:
             if qty > delta:
@@ -632,7 +632,7 @@ class ForecastComplete(Wizard):
             return {'products': [x.id for x in self.choose.products]}
         pbl = self._get_product_quantity()
         products = []
-        for (_, product), qty in pbl.iteritems():
+        for (_, product), qty in pbl.items():
             if qty < 0:
                 products.append(product)
         return {'products': products}
@@ -663,7 +663,7 @@ class ForecastComplete(Wizard):
             products = None
 
         to_save = []
-        for key, qty in pbl.iteritems():
+        for key, qty in pbl.items():
             _, product = key
             if products and product not in products:
                 continue
diff --git a/setup.py b/setup.py
index 822bb5b1c7..c2f535e394 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'))
@@ -101,7 +99,6 @@ 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',
@@ -110,6 +107,7 @@ setup(name=name,
         'Topic :: Office/Business',
         ],
     license='GPL-3',
+    python_requires='>=3.4',
     install_requires=requires,
     dependency_links=dependency_links,
     zip_safe=False,
@@ -119,5 +117,4 @@ setup(name=name,
     """,
     test_suite='tests',
     test_loader='trytond.test_loader:Loader',
-    use_2to3=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://}