diff --git a/NEWS.rst b/NEWS.rst
index d99490ec..5cc07aec 100644
--- a/NEWS.rst
+++ b/NEWS.rst
@@ -67,8 +67,8 @@ Other Actions Not Blocking Release
 * API for ensuring max memory ceiling isn't exceeded.
 * Move off nose for testing.
 
-0.12.0 (not yet released)
-=========================
+0.12.0 (released 2019-09-15)
+============================
 
 Backwards Compatibility Notes
 -----------------------------
diff --git a/c-ext/python-zstandard.h b/c-ext/python-zstandard.h
index 5c5bd3c0..35fee194 100644
--- a/c-ext/python-zstandard.h
+++ b/c-ext/python-zstandard.h
@@ -16,7 +16,7 @@
 #include <zdict.h>
 
 /* Remember to change the string in zstandard/__init__ as well */
-#define PYTHON_ZSTANDARD_VERSION "0.12.0.dev0"
+#define PYTHON_ZSTANDARD_VERSION "0.12.0"
 
 typedef enum {
 	compressorobj_flush_finish,
diff --git a/tests/test_module_attributes.py b/tests/test_module_attributes.py
index 45f81918..d67b93ec 100644
--- a/tests/test_module_attributes.py
+++ b/tests/test_module_attributes.py
@@ -14,7 +14,7 @@ class TestModuleAttributes(unittest.TestCase):
     def test_version(self):
         self.assertEqual(zstd.ZSTD_VERSION, (1, 4, 3))
 
-        self.assertEqual(zstd.__version__, '0.12.0.dev0')
+        self.assertEqual(zstd.__version__, '0.12.0')
 
     def test_constants(self):
         self.assertEqual(zstd.MAX_COMPRESSION_LEVEL, 22)
diff --git a/zstandard/__init__.py b/zstandard/__init__.py
index 1047ae5f..290df37f 100644
--- a/zstandard/__init__.py
+++ b/zstandard/__init__.py
@@ -62,4 +62,4 @@
                       'cext, or cffi' % _module_policy)
 
 # Keep this in sync with python-zstandard.h.
-__version__ = '0.12.0.dev0'
+__version__ = '0.12.0'