diff --git a/.github/workflows/release-published.yml b/.github/workflows/release-published.yml
index 0cf7fc5..ebfa2df 100644
--- a/.github/workflows/release-published.yml
+++ b/.github/workflows/release-published.yml
@@ -205,7 +205,7 @@ jobs:
             codex-targets: aarch64-apple-darwin
             rust-target: aarch64-apple-darwin
           - platform: macos-x86_64
-            os: macos-13
+            os: macos-15-intel
             python-interpreter: 3.12
             codex-targets: x86_64-apple-darwin
             rust-target: x86_64-apple-darwin
diff --git a/tests/test_release_workflows.py b/tests/test_release_workflows.py
index 3622677..25017e6 100644
--- a/tests/test_release_workflows.py
+++ b/tests/test_release_workflows.py
@@ -23,6 +23,8 @@ def test_release_workflow_builds_split_macos_wheels() -> None:
     assert "macos-x86_64" in workflow
     assert "codex-targets: aarch64-apple-darwin" in workflow
     assert "codex-targets: x86_64-apple-darwin" in workflow
+    assert "os: macos-15-intel" in workflow
+    assert "os: macos-13" not in workflow
     assert "macos-universal2" not in workflow
     assert "universal2-apple-darwin" not in workflow