diff --git a/README.md b/README.md
index 41e5f75..f572075 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ How to utilize it? See [examples](./doc/example.md).
 
 ## Installation
 
-egzact requires [Egison](https://www.egison.org/) version 3.10.3.
+egzact requires [Egison](https://www.egison.org/) version 4.0.0.
 Following installation procedure include installation of Egison.
 
 #### Linux users (RHEL compatible distros)
diff --git a/pkg/.tar2package.yml b/pkg/.tar2package.yml
index 400f041..ceec490 100644
--- a/pkg/.tar2package.yml
+++ b/pkg/.tar2package.yml
@@ -2,9 +2,9 @@ name : egzact
 cmdname : egzact
 summary : Strengthen weak points of the shell
 description : New command line tools with three concepts.
-version : 1.3.2
-changelog : Support Egison 3.10.3
+version : 2.0.0
+changelog : Support Egison 4.0.0
 url : https://github.com/greymd/egzact
 author : Yasuhiro, Yamada
-email : greengregson@gmail.com
+email : yamadagrep@gmail.com
 libdir : /usr/lib
diff --git a/pkg/egzact.deb b/pkg/egzact.deb
index e55cffe..d4dc21d 100644
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diff --git a/pkg/egzact.rpm b/pkg/egzact.rpm
index aac53e1..b544bd7 100644
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