diff --git a/.ci.yaml b/.ci.yaml
index 5a65ef8d60432..ba5543be80289 100644
--- a/.ci.yaml
+++ b/.ci.yaml
@@ -28,6 +28,7 @@ platform_properties:
           {"name":"builder_mac_engine","path":"builder"}
         ]
       os: Mac-10.15
+      xcode: 12a7209 # xcode 12
   windows:
     properties:
       caches: >-