diff --git a/scripts/nightly.yaml b/scripts/nightly.yaml
index 0cf37a11d..916779a58 100644
--- a/scripts/nightly.yaml
+++ b/scripts/nightly.yaml
@@ -12,7 +12,7 @@ stages:
   - job: MacBuild
     displayName: "Mac Build"
     pool:
-      vmImage: "macOS-latest"
+      vmImage: "macOS-13"
     steps:
     - task: PythonScript@0
       displayName: Build
@@ -41,7 +41,7 @@ stages:
   - job: MacBuildArm64
     displayName: "Mac ARM64 Build"
     pool:
-      vmImage: "macOS-latest"
+      vmImage: "macOS-13"
     steps:
     - script: python scripts/mk_unix_dist.py --dotnet-key=$(Build.SourcesDirectory)/resources/z3.snk --arch=arm64
     - script: git clone https://github.com/z3prover/z3test z3test
diff --git a/scripts/release.yml b/scripts/release.yml
index 3b25ca084..6657ff894 100644
--- a/scripts/release.yml
+++ b/scripts/release.yml
@@ -17,7 +17,7 @@ stages:
   - job: MacBuild
     displayName: "Mac Build"
     pool:
-      vmImage: "macOS-latest"
+      vmImage: "macOS-13"
     steps:
     - task: PythonScript@0
       displayName: Build
@@ -46,7 +46,7 @@ stages:
   - job: MacBuildArm64
     displayName: "Mac ARM64 Build"
     pool:
-      vmImage: "macOS-latest"
+      vmImage: "macOS-13"
     steps:
     - script: python scripts/mk_unix_dist.py --dotnet-key=$(Build.SourcesDirectory)/resources/z3.snk --arch=arm64
     - script: git clone https://github.com/z3prover/z3test z3test