diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 7d609aa1d..3cf3720b9 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -35,9 +35,9 @@ jobs:
 - job: macOS_x64
   timeoutInMinutes: 120
   pool:
-    vmImage: macos-latest
+    vmImage: macos-12
   variables:
-    compiler: clangxx_osx-64
+    compiler: clangxx_osx-64=18.1
     compiler_version: 12.0
     boost_version: 1.82.0
     number_of_cores: sysctl -n hw.ncpu
@@ -106,7 +106,7 @@ jobs:
 - job: macOS_x64_java
   timeoutInMinutes: 90
   pool:
-    vmImage: macos-latest
+    vmImage: macos-12
   variables:
     compiler: clangxx_osx-64
     compiler_version: 15.0