Prepare 17.1.0

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 3db2dba..fd438ea 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst

@@ -5,7 +5,7 @@
 The third digit is only for regressions.
 
 
-17.1.0 (UNRELEASED)
+17.1.0 (2017-05-16)
 -------------------
 
 To encourage more participation, the project has also been moved into a `dedicated GitHub organization <https://github.com/python-attrs/>`_ and everyone is most welcome to join!

diff --git a/src/attr/__init__.py b/src/attr/__init__.py
index ec9b380..545ae0e 100644
--- a/src/attr/__init__.py
+++ b/src/attr/__init__.py

@@ -27,7 +27,7 @@
 from . import validators
 
 
-__version__ = "17.1.0.dev0"
+__version__ = "17.1.0"
 
 __title__ = "attrs"
 __description__ = "Classes Without Boilerplate"