diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 2ffe90a..01c9e72 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -7,7 +7,7 @@ on:
   
 jobs:
   build:
-    runs-on: macos-15
+    runs-on: macos-26
     permissions:
       id-token: write
       contents: write