diff --git a/README.md b/README.md
index 9dec0f96..9e58734e 100644
--- a/README.md
+++ b/README.md
@@ -101,9 +101,19 @@ Clone the source code:
 ~~~~
 mkdir -p ~/src/ihk+mckernel/
 cd ~/src/ihk+mckernel/
-git clone --recursive https://github.com/RIKEN-SysSoft/mckernel.git
+git clone --recursive -b development https://github.com/RIKEN-SysSoft/mckernel.git
 ~~~~
 
+(Optional) Checkout to the specific branch or version:
+
+~~~~
+cd mckernel
+git checkout <pathspec>
+git submodule update
+~~~~
+
+Foe example, if you want to try the development branch, use "development" as the pathspec. If you want to try the prerelease version 1.7.0-0.2, use "1.7.0-0.2".
+
 ###### 4.1 Install with cmake
 
 Configure and compile: