2 files changed, 4 insertions, 4 deletions
diff --git a/Makefile b/Makefile
index a3b9428..0076c9e 100644
--- a/Makefile
+++ b/Makefile
@@ -32,8 +32,8 @@ makefile_dir := $(dir $(realpath $(firstword $(MAKEFILE_LIST))))
 
 # Jekyll project is in the parent directory by default.
 PROJECT_DIR ?= $(abspath $(dir $(makefile_dir))/..)
-RUBY_INSTALL_VERSION ?= 0.7.0
-RUBY_VERSION ?= 2.6.5
+RUBY_INSTALL_VERSION ?= 0.8.5
+RUBY_VERSION ?= 3.1.2
 CHRUBY_VERSION ?= 0.3.9
 PREFIX ?= $(HOME)/.local
 
diff --git a/README.md b/README.md
index cee484e..dcf2230 100644
--- a/README.md
+++ b/README.md
@@ -25,8 +25,8 @@ Or don't.
 | Parameter            | Default   | Description
 | -------------------- | --------- | --------------------------------------------------
 | PROJECT_DIR          | ..        | Jekyll project directory
-| RUBY_INSTALL_VERSION | 0.7.0     | ruby-install version
-| RUBY_VERSION         | 2.6.5     | Ruby version
+| RUBY_INSTALL_VERSION | 0.8.5     | ruby-install version
+| RUBY_VERSION         | 3.1.2     | Ruby version
 | CHRUBY_VERSION       | 0.3.9     | chruby version
 | PREFIX               | ~/.local/ | Installation directory for ruby-install and chruby