diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 0af187a..8aaca5a 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -29,7 +29,7 @@ jobs:
 
   vs-ponyc-release-macOS-x86_64:
     name: Test against recent ponyc release on x86-64 macOS
-    runs-on: macos-15
+    runs-on: macos-26
     steps:
       - uses: actions/checkout@v4.1.1
       - name: Install dependencies