diff --git a/setup.py b/setup.py
index 01287a8f..a45b9486 100644
--- a/setup.py
+++ b/setup.py
@@ -2,6 +2,7 @@
 # Copyright © 2015-2017 ACSONE SA/NV
 # License LGPLv3 (http://www.gnu.org/licenses/lgpl-3.0-standalone.html)
 
+import io
 import os
 
 import setuptools
@@ -9,9 +10,9 @@
 here = os.path.abspath(os.path.dirname(__file__))
 
 long_description = []
-with open(os.path.join("README.rst")) as f:
+with io.open(os.path.join("README.rst"), encoding="utf-8") as f:
     long_description.append(f.read())
-with open(os.path.join("CHANGES.rst")) as f:
+with io.open(os.path.join("CHANGES.rst"), encoding="utf-8") as f:
     long_description.append(f.read())