diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 68cdc3f0..8487455b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -202,15 +202,15 @@ jobs:
             os: ubuntu-latest
             container: ubuntu:25.04
             install: clang-20
-          - toolset: clang
-            os: macos-13
-            cxxstd: 11,14,17,20,2b
           - toolset: clang
             os: macos-14
             cxxstd: 11,14,17,20,2b
           - toolset: clang
             os: macos-15
             cxxstd: 11,14,17,20,2b
+          - toolset: clang
+            os: macos-26
+            cxxstd: 11,14,17,20,2b
 
     needs: [runner-selection]
     runs-on: ${{ fromJSON(needs.runner-selection.outputs.labelmatrix)[matrix.os] }}