diff --git a/.sdkmanrc b/.sdkmanrc
new file mode 100644
index 000000000..5b7a8c03c
--- /dev/null
+++ b/.sdkmanrc
@@ -0,0 +1 @@
+java=17.0.7-tem
\ No newline at end of file
diff --git a/README.md b/README.md
index 0b5f9dd94..6d1ed3d54 100644
--- a/README.md
+++ b/README.md
@@ -71,7 +71,10 @@ The Testing Robot Pattern is a method for writing UI tests. It divides the test
 1. You need to install the following tools.
 
 - JDK 17
+  - You can install via [SDKMAN](https://sdkman.io/), 
+  - `sdk install $(cat .sdkmanrc | sed -e 's/java=/ /')`
 - Xcode, [`.xcode-version`](.xcode-version) version
+　- You can install via [Xcodes](https://www.xcodes.app/)
 - Ruby, [`.ruby-version`](.ruby-version) version
   - bundler (you can install by `gem install bundler` or `sudo gem install bundler`)