diff --git a/coolpuppy/_version.py b/coolpuppy/_version.py
index 4540372..093113c 100644
--- a/coolpuppy/_version.py
+++ b/coolpuppy/_version.py
@@ -1,4 +1,4 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-__version__ = "1.0.0.dev"
+__version__ = "1.0.0"