diff --git a/.github/workflows/build_viewer.yml b/.github/workflows/build_viewer.yml
index 4e08d2db9e..8607d921fa 100644
--- a/.github/workflows/build_viewer.yml
+++ b/.github/workflows/build_viewer.yml
@@ -35,7 +35,7 @@ jobs:
   build_matrix:
     strategy:
       matrix:
-        os: [macos-14,ubuntu-22.04,windows-2022]
+        os: [macos-15,ubuntu-22.04,windows-2022]
         grid: [sl,os]
         variant: [regular, avx]
     runs-on: ${{ matrix.os }}