diff --git a/README.md b/README.md
index cd94d76a5..c49027df3 100644
--- a/README.md
+++ b/README.md
@@ -17,8 +17,8 @@ This action currently supports these versions of MRI, JRuby and TruffleRuby:
 | ----------- | -------- |
 | `ruby` | 1.9.3, 2.0.0, 2.1.9, 2.2, all versions from 2.3.0 until 4.0.2, head, debug, mingw, mswin, ucrt |
 | `jruby` | 9.1.17.0 - 10.0.5.0, head |
-| `truffleruby` | 19.3.0 - 33.0.1, head |
-| `truffleruby+graalvm` | 21.2.0 - 33.0.1, head |
+| `truffleruby` | 19.3.0 - 34.0.0, head |
+| `truffleruby+graalvm` | 21.2.0 - 34.0.0, head |
 
 `ruby-debug` is the same as `ruby-head` but with assertions enabled (`-DRUBY_DEBUG=1`).
 
diff --git a/dist/index.js b/dist/index.js
index d4070d4b6..a0474e18a 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -92390,7 +92390,7 @@ module.exports = /*#__PURE__*/JSON.parse('{"name":"@actions/cache","version":"5.
 /***/ ((module) => {
 
 "use strict";
-module.exports = /*#__PURE__*/JSON.parse('{"ruby":["1.9.3-p551","2.0.0-p648","2.1.9","2.2.10","2.3.0","2.3.1","2.3.2","2.3.3","2.3.4","2.3.5","2.3.6","2.3.7","2.3.8","2.4.0","2.4.1","2.4.2","2.4.3","2.4.4","2.4.5","2.4.6","2.4.7","2.4.9","2.4.10","2.5.0","2.5.1","2.5.2","2.5.3","2.5.4","2.5.5","2.5.6","2.5.7","2.5.8","2.5.9","2.6.0","2.6.1","2.6.2","2.6.3","2.6.4","2.6.5","2.6.6","2.6.7","2.6.8","2.6.9","2.6.10","2.7.0","2.7.1","2.7.2","2.7.3","2.7.4","2.7.5","2.7.6","2.7.7","2.7.8","3.0.0-preview1","3.0.0-preview2","3.0.0-rc1","3.0.0","3.0.1","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6","3.0.7","3.1.0-preview1","3.1.0","3.1.1","3.1.2","3.1.3","3.1.4","3.1.5","3.1.6","3.1.7","3.2.0-preview1","3.2.0-preview2","3.2.0-preview3","3.2.0-rc1","3.2.0","3.2.1","3.2.2","3.2.3","3.2.4","3.2.5","3.2.6","3.2.7","3.2.8","3.2.9","3.2.10","3.2.11","3.3.0-preview1","3.3.0-preview2","3.3.0-preview3","3.3.0-rc1","3.3.0","3.3.1","3.3.2","3.3.3","3.3.4","3.3.5","3.3.6","3.3.7","3.3.8","3.3.9","3.3.10","3.3.11","3.4.0-preview1","3.4.0-preview2","3.4.0-rc1","3.4.0","3.4.1","3.4.2","3.4.3","3.4.4","3.4.5","3.4.6","3.4.7","3.4.8","3.4.9","3.5.0-preview1","4.0.0-preview2","4.0.0-preview3","4.0.0","4.0.1","4.0.2","head","debug","asan","asan-release"],"jruby":["9.1.17.0","9.2.9.0","9.2.10.0","9.2.11.0","9.2.11.1","9.2.12.0","9.2.13.0","9.2.14.0","9.2.15.0","9.2.16.0","9.2.17.0","9.2.18.0","9.2.19.0","9.2.20.0","9.2.20.1","9.2.21.0","9.3.0.0","9.3.1.0","9.3.2.0","9.3.3.0","9.3.4.0","9.3.6.0","9.3.7.0","9.3.8.0","9.3.9.0","9.3.10.0","9.3.11.0","9.3.13.0","9.3.14.0","9.3.15.0","9.4.0.0","9.4.1.0","9.4.2.0","9.4.3.0","9.4.4.0","9.4.5.0","9.4.6.0","9.4.7.0","9.4.8.0","9.4.9.0","9.4.10.0","9.4.11.0","9.4.12.0","9.4.12.1","9.4.13.0","9.4.14.0","10.0.0.0","10.0.0.1","10.0.1.0","10.0.2.0","10.0.3.0","10.0.4.0","10.0.5.0","head"],"truffleruby":["19.3.0","19.3.1","20.0.0","20.1.0","20.2.0","20.3.0","21.0.0","21.1.0","21.2.0","21.2.0.1","21.3.0","22.0.0.2","22.1.0","22.2.0","22.3.0","22.3.1","23.0.0-preview1","23.0.0","23.1.0","23.1.1","23.1.2","24.0.0","24.0.1","24.0.2","24.1.0","24.1.1","24.1.2","24.2.0","24.2.1","25.0.0","33.0.0","33.0.1","head"],"truffleruby+graalvm":["21.2.0","21.3.0","22.0.0.2","22.1.0","22.2.0","22.3.0","22.3.1","23.0.0-preview1","23.0.0","23.1.0","23.1.1","23.1.2","24.0.0","24.0.1","24.0.2","24.1.0","24.1.1","24.1.2","24.2.0","24.2.1","25.0.0","33.0.0","33.0.1","head"]}');
+module.exports = /*#__PURE__*/JSON.parse('{"ruby":["1.9.3-p551","2.0.0-p648","2.1.9","2.2.10","2.3.0","2.3.1","2.3.2","2.3.3","2.3.4","2.3.5","2.3.6","2.3.7","2.3.8","2.4.0","2.4.1","2.4.2","2.4.3","2.4.4","2.4.5","2.4.6","2.4.7","2.4.9","2.4.10","2.5.0","2.5.1","2.5.2","2.5.3","2.5.4","2.5.5","2.5.6","2.5.7","2.5.8","2.5.9","2.6.0","2.6.1","2.6.2","2.6.3","2.6.4","2.6.5","2.6.6","2.6.7","2.6.8","2.6.9","2.6.10","2.7.0","2.7.1","2.7.2","2.7.3","2.7.4","2.7.5","2.7.6","2.7.7","2.7.8","3.0.0-preview1","3.0.0-preview2","3.0.0-rc1","3.0.0","3.0.1","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6","3.0.7","3.1.0-preview1","3.1.0","3.1.1","3.1.2","3.1.3","3.1.4","3.1.5","3.1.6","3.1.7","3.2.0-preview1","3.2.0-preview2","3.2.0-preview3","3.2.0-rc1","3.2.0","3.2.1","3.2.2","3.2.3","3.2.4","3.2.5","3.2.6","3.2.7","3.2.8","3.2.9","3.2.10","3.2.11","3.3.0-preview1","3.3.0-preview2","3.3.0-preview3","3.3.0-rc1","3.3.0","3.3.1","3.3.2","3.3.3","3.3.4","3.3.5","3.3.6","3.3.7","3.3.8","3.3.9","3.3.10","3.3.11","3.4.0-preview1","3.4.0-preview2","3.4.0-rc1","3.4.0","3.4.1","3.4.2","3.4.3","3.4.4","3.4.5","3.4.6","3.4.7","3.4.8","3.4.9","3.5.0-preview1","4.0.0-preview2","4.0.0-preview3","4.0.0","4.0.1","4.0.2","head","debug","asan","asan-release"],"jruby":["9.1.17.0","9.2.9.0","9.2.10.0","9.2.11.0","9.2.11.1","9.2.12.0","9.2.13.0","9.2.14.0","9.2.15.0","9.2.16.0","9.2.17.0","9.2.18.0","9.2.19.0","9.2.20.0","9.2.20.1","9.2.21.0","9.3.0.0","9.3.1.0","9.3.2.0","9.3.3.0","9.3.4.0","9.3.6.0","9.3.7.0","9.3.8.0","9.3.9.0","9.3.10.0","9.3.11.0","9.3.13.0","9.3.14.0","9.3.15.0","9.4.0.0","9.4.1.0","9.4.2.0","9.4.3.0","9.4.4.0","9.4.5.0","9.4.6.0","9.4.7.0","9.4.8.0","9.4.9.0","9.4.10.0","9.4.11.0","9.4.12.0","9.4.12.1","9.4.13.0","9.4.14.0","10.0.0.0","10.0.0.1","10.0.1.0","10.0.2.0","10.0.3.0","10.0.4.0","10.0.5.0","head"],"truffleruby":["19.3.0","19.3.1","20.0.0","20.1.0","20.2.0","20.3.0","21.0.0","21.1.0","21.2.0","21.2.0.1","21.3.0","22.0.0.2","22.1.0","22.2.0","22.3.0","22.3.1","23.0.0-preview1","23.0.0","23.1.0","23.1.1","23.1.2","24.0.0","24.0.1","24.0.2","24.1.0","24.1.1","24.1.2","24.2.0","24.2.1","25.0.0","33.0.0","33.0.1","34.0.0","head"],"truffleruby+graalvm":["21.2.0","21.3.0","22.0.0.2","22.1.0","22.2.0","22.3.0","22.3.1","23.0.0-preview1","23.0.0","23.1.0","23.1.1","23.1.2","24.0.0","24.0.1","24.0.2","24.1.0","24.1.1","24.1.2","24.2.0","24.2.1","25.0.0","33.0.0","33.0.1","34.0.0","head"]}');
 
 /***/ }),
 
diff --git a/generate-test-matrix.rb b/generate-test-matrix.rb
index dac2ddac3..703fec805 100644
--- a/generate-test-matrix.rb
+++ b/generate-test-matrix.rb
@@ -53,7 +53,7 @@ def unique_versions(versions, segment_count, *symbolic)
 
 # truffleruby: latest release + head
 truffleruby_versions = %w[truffleruby truffleruby-head truffleruby+graalvm truffleruby+graalvm-head]
-matrix += non_windows_runners.product(truffleruby_versions)
+matrix += (macos_arm64_runners + ubuntu_runners).product(truffleruby_versions)
 
 # ruby-loco: head
 ruby_loco_versions = %w[mingw mswin ucrt]
@@ -73,7 +73,5 @@ def unique_versions(versions, segment_count, *symbolic)
 matrix -= ubuntu_arm64_runners.product(%w[1.9 2.0 2.1 2.2])
 # RubyInstaller windows-arm64 builds only exist for Ruby 3.4+
 matrix -= windows_arm64_runners.product(%w[2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 3.0 3.1 3.2 3.3])
-# TruffleRuby 34+ does not support macOS Intel
-matrix -= macos_x64_runners.product(%w[truffleruby-head truffleruby+graalvm-head])
 
 puts(JSON.generate(matrix.sort.map { |os, ruby| { os:, ruby: } }))
diff --git a/ruby-builder-versions.json b/ruby-builder-versions.json
index 6ace47e58..c8cd8e525 100644
--- a/ruby-builder-versions.json
+++ b/ruby-builder-versions.json
@@ -35,6 +35,7 @@
     "24.0.0", "24.0.1", "24.0.2", "24.1.0", "24.1.1", "24.1.2", "24.2.0", "24.2.1",
     "25.0.0",
     "33.0.0", "33.0.1",
+    "34.0.0",
     "head"
   ],
   "truffleruby+graalvm": [
@@ -44,6 +45,7 @@
     "24.0.0", "24.0.1", "24.0.2", "24.1.0", "24.1.1", "24.1.2", "24.2.0", "24.2.1",
     "25.0.0",
     "33.0.0", "33.0.1",
+    "34.0.0",
     "head"
   ]
 }