diff --git a/CHANGELOG.md b/CHANGELOG.md
index 08c2838..b7cdabb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Release notes
 
-## 1.0 (unreleased)
+## 1.0.0 (2022-03-03)
 
 feat: build extension with scikit-build
 
diff --git a/mixstream/_MixStream.pyx b/mixstream/_MixStream.pyx
index f0550bc..8e5437a 100644
--- a/mixstream/_MixStream.pyx
+++ b/mixstream/_MixStream.pyx
@@ -19,7 +19,7 @@
 # MA  02110-1301, USA.                                              #
 #####################################################################
 
-__version__ = "1.0"
+__version__ = "1.0.0"
 
 cdef extern from "MixStream.h":
     ctypedef struct CMixStream "MixStream":
diff --git a/setup.py b/setup.py
index 0ea5fed..468542c 100644
--- a/setup.py
+++ b/setup.py
@@ -25,7 +25,7 @@
 # setup
 setup(
     name='mixstream',
-    version='1.0',
+    version='1.0.0',
     description='MixStream is a C-extension to combine SoundTouch and SDL_mixer',
     long_description=long_description,
     long_description_content_type='text/markdown',