diff --git a/.github/workflows/enzyme-ci.yml b/.github/workflows/enzyme-ci.yml
index 5f8e9ea6e524..6ab46a8b08d8 100644
--- a/.github/workflows/enzyme-ci.yml
+++ b/.github/workflows/enzyme-ci.yml
@@ -56,13 +56,14 @@ jobs:
   
   build-macos:
     name: Enzyme CI LLVM ${{ matrix.llvm }} ${{ matrix.build }} macOS
-    runs-on: macos-latest
+    runs-on: ${{ matrix.os }}
     
     strategy:
       fail-fast: false
       matrix:
         llvm: ["12", "13", "14", "15", "16"]
         build: ["Release", "Debug"] # "RelWithDebInfo"
+        os: [macos-12, macos-14]
   
     timeout-minutes: 30 
     steps:
@@ -95,13 +96,14 @@ jobs:
 
   build-xcode:
     name: Enzyme CI LLVM ${{ matrix.llvm }} ${{ matrix.build }} macOS XCode
-    runs-on: macos-latest
+    runs-on: ${{ matrix.os }}
 
     strategy:
       fail-fast: false
       matrix:
         llvm: ["13"] #, "14"]
         build: ["Release"] # "RelWithDebInfo"
+        os: [macos-12, macos-14]
 
     timeout-minutes: 30
     steps: