diff --git a/.github/workflows/development.yml b/.github/workflows/development.yml
index a3bff66d..7fde420c 100644
--- a/.github/workflows/development.yml
+++ b/.github/workflows/development.yml
@@ -22,8 +22,11 @@ jobs:
         env: [""]
         
         include:
+          - os: macos
+            ruby: truffleruby-head
+            experimental: true
           - os: ubuntu
-            ruby: truffleruby
+            ruby: truffleruby-head
             experimental: true
           - os: ubuntu
             ruby: jruby
@@ -40,6 +43,8 @@ jobs:
         bundler-cache: true
     
     - name: Run tests
-      timeout-minutes: 5
+      timeout-minutes: 6
+      env:  
+        TRUFFLERUBYOPT: '--experimental-options --engine.MultiTier --engine.Mode=latency'
       run: |
         ${{matrix.env}} bundle exec rspec