diff --git a/.tool-versions b/.tool-versions
index 45f1ca6..f18bf99 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1 +1,2 @@
 nodejs 24.10.0
+ruby 3.2.2
diff --git a/rails/Gemfile b/rails/Gemfile
index 74131a6..92dad45 100644
--- a/rails/Gemfile
+++ b/rails/Gemfile
@@ -1,5 +1,6 @@
 source 'https://rubygems.org'
-ruby '>= 3.0'
+# ruby 3.2.2 is the latest as of rails 7.0.7.2 specified below
+ruby '3.2.2'
 
 gem 'rails', '7.0.7.2'
 
diff --git a/rails/bin/determinator b/rails/bin/determinator
index 32043b8..e2e05a0 100755
--- a/rails/bin/determinator
+++ b/rails/bin/determinator
@@ -1,7 +1,7 @@
 #!/usr/bin/env ruby
 
 gemfile = File.read("./Gemfile")
-REQUIRED_RUBY_VERSION = gemfile[/ruby ['"]>=(.+)['"]/, 1]
+REQUIRED_RUBY_VERSION = gemfile[/ruby ['"]([\d\.]+)['"]/, 1]
 ACTUAL_RUBY_VERSION = RUBY_VERSION
 
 HOMEBREW_INSTALLATION_COMMAND = '/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"'
@@ -52,9 +52,9 @@ end
 
 puts ""
 puts "🤖 I am The Determinator! Come with me if you want to use the right Ruby version!"
-puts "ℹ️  Minicom uses Ruby #{REQUIRED_RUBY_VERSION} or greater. Let me check what version of Ruby you have…"
+puts "ℹ️  Minicom uses Ruby #{REQUIRED_RUBY_VERSION}. Let me check what version of Ruby you have…"
 
-if REQUIRED_RUBY_VERSION <= ACTUAL_RUBY_VERSION
+if REQUIRED_RUBY_VERSION == ACTUAL_RUBY_VERSION
   puts "✅ You’re using Ruby #{ACTUAL_RUBY_VERSION}. You’re all set!"
   exit(0)
 else