diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 425e9ecb18..5a420466cc 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,10 +20,6 @@ jobs:
             ruby: truffleruby
           - os: windows-latest
             ruby: truffleruby-head
-          - os: ubuntu-latest
-            ruby: truffleruby-head
-          - os: macos-latest
-            ruby: truffleruby-head
           - os: windows-latest
             ruby: jruby
           - os: windows-latest