diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 3c83e8f2..76577fe1 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -17,7 +17,6 @@ jobs:
           "3.3",
         ]
         gemfile: [
-          "Gemfile-rails.6.1.x",
           "Gemfile-rails.7.0.x",
           "Gemfile-rails.7.1.x",
           "Gemfile-rails.7.2.x",
diff --git a/.ruby-version b/.ruby-version
index 94ff29cc..fa7adc7a 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.1.1
+3.3.5
diff --git a/gemfiles/Gemfile-rails.6.1.x b/gemfiles/Gemfile-rails.6.1.x
deleted file mode 100644
index 85f3496b..00000000
--- a/gemfiles/Gemfile-rails.6.1.x
+++ /dev/null
@@ -1,7 +0,0 @@
-source 'https://rubygems.org'
-
-gem 'rails', '~> 6.1.0'
-
-gemspec path: '../vite_ruby'
-gemspec path: '../vite_rails'
-gemspec path: '../vite_plugin_legacy'