diff --git a/azure-pipelines-public.yml b/azure-pipelines-public.yml
index 98c9420f928..0cda45d0c05 100644
--- a/azure-pipelines-public.yml
+++ b/azure-pipelines-public.yml
@@ -176,7 +176,7 @@ stages:
             - job: macOS
               enablePublishTestResults: true
               pool:
-                vmImage: macOS-13
+                vmImage: macOS-15
               variables:
                 # Rely on task Arcade injects, not auto-injected build step.
                 - skipComponentGovernanceDetection: true
@@ -269,7 +269,7 @@ stages:
                   value: $(_BuildConfig)
                 - ${{ if eq(variables['System.TeamProject'], 'public') }}:
                   - name: HelixTargetQueues
-                    value: Windows.10.Amd64.Open;OSX.13.Amd64.Open;OSX.13.ARM64.Open;Ubuntu.2204.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-20.04-helix-sqlserver-amd64
+                    value: Windows.10.Amd64.Open;OSX.15.Amd64.Open;OSX.15.ARM64.Open;Ubuntu.2204.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-20.04-helix-sqlserver-amd64
                   - name: _HelixAccessToken
                     value: '' # Needed for public queues
                 - ${{ if ne(variables['System.TeamProject'], 'public') }}:
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 8505fdc64a8..645d626dd63 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -131,7 +131,7 @@ extends:
           - job: macOS
             pool:
               name: Azure Pipelines
-              image: macOS-13
+              image: macOS-15
               os: macOS
             variables:
               # Rely on task Arcade injects, not auto-injected build step.