diff --git a/gristmill/__init__.py b/gristmill/__init__.py
index ad52ee9..564a86f 100644
--- a/gristmill/__init__.py
+++ b/gristmill/__init__.py
@@ -10,7 +10,7 @@
 from .optimize import optimize, verify_eval_seq, ContrStrat
 from .utils import get_flop_cost
 
-__version__ = '0.6.0dev'
+__version__ = '0.6.0'
 
 __all__ = [
     'ContrStrat',
diff --git a/setup.py b/setup.py
index 6ff247a..6385481 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@
 
 setup(
     name='gristmill',
-    version='0.6.0dev',
+    version='0.6.0',
     description=DESCRIPTION.splitlines()[0],
     long_description=DESCRIPTION,
     url='https://github.com/tschijnmo/gristmill',