diff --git a/docs/source/conf.py b/docs/source/conf.py
index cf8c1b8..c393259 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -22,7 +22,7 @@
 author = 'TSANG Terrence Tak Lun'
 
 # The full version, including alpha/beta/rc tags
-release = '1.0.0-beta'
+release = '1.0.0-charlie'
 
 
 # -- General configuration ---------------------------------------------------
diff --git a/setup.py b/setup.py
index 907229c..d17452f 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setuptools.setup(
     name="kontrol", # Replace with your own username
-    version="1.0.0-beta",
+    version="1.0.0-charlie",
     author="TSANG Terrence Tak Lun",
     author_email="terrencetec@gmail.com",
     description="KAGRA control python package",