diff --git a/CITATION.cff b/CITATION.cff
index d5aeda3..ad7ffe7 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -3,8 +3,8 @@ message: "If you use this software, please cite it as below."
 
 title: "decode"
 abstract: "DESHIMA code for data analysis"
-version: 1.0.0
-date-released: 2023-07-16
+version: 2.0.0
+date-released: 2023-10-21
 license: "MIT"
 doi: "10.5281/zenodo.3384216"
 url: "https://github.com/deshima-dev/decode"
diff --git a/LICENSE b/LICENSE
index 254c2a9..330ac41 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2018-2023 Akio Taniguchi
+Copyright (c) 2018-2023 DESHIMA Team
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index 17fa528..b247fd2 100644
--- a/README.md
+++ b/README.md
@@ -11,5 +11,5 @@ DESHIMA code for data analysis
 ## Installation
 
 ```shell
-pip install decode
+pip install decode==2.0.0
 ```
diff --git a/decode/__init__.py b/decode/__init__.py
index c434863..6b924b2 100644
--- a/decode/__init__.py
+++ b/decode/__init__.py
@@ -1,5 +1,5 @@
 __all__ = ["io"]
-__version__ = "1.0.0"
+__version__ = "2.0.0"
 
 
 # submodules
diff --git a/docs/conf.py b/docs/conf.py
index e87cc2d..dbdebfd 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,6 +1,6 @@
 # project information
-author = "Akio Taniguchi"
-copyright = "2018-2023 Akio Taniguchi"
+author = "DESHIMA Team"
+copyright = "2018-2023 DESHIMA Team"
 
 
 # general configuration
diff --git a/pyproject.toml b/pyproject.toml
index f54dfc4..0ac7694 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "decode"
-version = "1.0.0"
+version = "2.0.0"
 description = "DESHIMA code for data analysis"
 authors = ["Akio Taniguchi <taniguchi@a.phys.nagoya-u.ac.jp>"]
 keywords = [