diff --git a/README.md b/README.md
index db1bcbb..1a42cf7 100644
--- a/README.md
+++ b/README.md
@@ -108,7 +108,7 @@ Programming languages, package managers, and configuration:
 * [asdf-vm] for managing programming language versions
 * [Bundler] for managing Ruby libraries
 * [Node.js] and [npm], for running apps and installing JavaScript packages
-* [Ruby] stable for writing general-purpose code
+* [Ruby] stable for writing general-purpose code : 2.7.5 and 3.0.3
 * [Yarn] for managing JavaScript packages
 
 [Bundler]: http://bundler.io/
@@ -121,13 +121,7 @@ Programming languages, package managers, and configuration:
 
 Databases:
 
-* [Postgres] for storing relational data
-* [Redis] for storing key-value data
-
-[Postgres]: http://www.postgresql.org/
-[Redis]: http://redis.io/
-
-It should take less than 15 minutes to install (depends on your machine).
+No databases installed, we rely on Docker containers for these.
 
 Customize in `~/.laptop.local`
 ------------------------------
diff --git a/mac b/mac
index 8692316..b83e783 100644
--- a/mac
+++ b/mac
@@ -137,9 +137,6 @@ brew "coreutils"
 brew "yarn"
 cask "gpg-suite-no-mail"
 
-# Databases
-brew "postgres", restart_service: :changed
-brew "redis", restart_service: :changed
 EOF
 
 fancy_echo "Update heroku binary ..."
@@ -180,8 +177,9 @@ install_asdf_language() {
   fi
 }
 
-fancy_echo "Installing latest Ruby ..."
-install_asdf_language "ruby"
+fancy_echo "Installing Rubies ..."
+asdf install ruby 2.7.5
+asdf install ruby 3.0.3
 gem update --system
 number_of_cores=$(sysctl -n hw.ncpu)
 bundle config --global jobs $((number_of_cores - 1))
@@ -194,3 +192,6 @@ if [ -f "$HOME/.laptop.local" ]; then
   # shellcheck disable=SC1090
   . "$HOME/.laptop.local"
 fi
+
+fancy_echo "Go install Docker"
+open https://docs.docker.com/desktop/mac/install/