diff --git a/README.md b/README.md
index 836f23b..dd42af2 100644
--- a/README.md
+++ b/README.md
@@ -6,18 +6,22 @@ Please watch this video. https://www.youtube.com/watch?v=wmKSr9Aoz-Y
 
 ## Installation
 
+I recommend you to use the binaries on [GitHub Releases](https://github.com/catatsuy/notify_slack/releases). Please download the latest version and use it.
+
+If you have a development environment for the Go language, you can compile and install it by yourself.
+
 ```
 GO111MODULE=on go get github.com/catatsuy/notify_slack/cmd/notify_slack
 ```
 
-Or you download from [Releases](https://github.com/catatsuy/notify_slack/releases).
-
-If you want to develop, please use the `make`. This software requires Go 1.13 or higher.
+If you want to develop it, you can use the `make`. It requires Go 1.13 or higher.
 
 ```
 make
 ```
 
+If you compile it by yourself, the output of `notify_slack -version` will not be appropriate. The source code doesn't contain version information.
+
 ## usage
 
 `./bin/notify_slack` posts to Slack. You specify the setting in command line option or toml setting file.