diff --git a/hepunits/_version.py b/hepunits/_version.py
index e703679..84b3e46 100644
--- a/hepunits/_version.py
+++ b/hepunits/_version.py
@@ -1,6 +1,6 @@
 # Licensed under a 3-clause BSD style license, see LICENSE.
 
-__version__ = '0.1.2'
+__version__ = '1.0.0'
 
 version = __version__
 version_info = __version__.split('.')
diff --git a/hepunits/units/__init__.py b/hepunits/units/__init__.py
index 6564f87..7983443 100644
--- a/hepunits/units/__init__.py
+++ b/hepunits/units/__init__.py
@@ -6,7 +6,5 @@
 The HEP System of Units is the set of basic units originally defined by the CLHEP project.
 """
 
-from __future__ import absolute_import
-
 from .prefixes import *
 from .units import *
diff --git a/setup.py b/setup.py
index ca3a172..891ec01 100644
--- a/setup.py
+++ b/setup.py
@@ -52,7 +52,7 @@ def get_version():
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
-        'Development Status :: 4 - Beta',
+        'Development Status :: 5 - Production/Stable',
     ],
     platforms = "Any",
 )