diff --git a/.github/workflows/build-wheels-metal.yaml b/.github/workflows/build-wheels-metal.yaml
index e56b16c7..f0011a98 100644
--- a/.github/workflows/build-wheels-metal.yaml
+++ b/.github/workflows/build-wheels-metal.yaml
@@ -11,7 +11,7 @@ jobs:
     runs-on: macos-${{ matrix.os }}
     strategy:
       matrix:
-        os: [12, 13, 14]
+        os: [13, 14, 15]
 
     steps:
       - uses: actions/checkout@v4
diff --git a/dependency/llama.cpp b/dependency/llama.cpp
index bb33473f..ed459776 160000
--- a/dependency/llama.cpp
+++ b/dependency/llama.cpp
@@ -1 +1 @@
-Subproject commit bb33473f08db604e1f30334366032f0904e2a722
+Subproject commit ed459776811d0928ce55a001e9e5a6bc3bf22ca4