diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c2f3584..ff87601 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -27,7 +27,7 @@ jobs:
         mruby-version:
           - 3.2.0
           - 3.3.0
-        platform: [ubuntu-latest, macos-latest, macos-13]
+        platform: [ubuntu-latest, macos-13]
     runs-on: ${{ matrix.platform }}
     steps:
       - uses: actions/checkout@v4