diff --git a/appveyor-macos-x64.yml b/appveyor-macos-x64.yml
index ae2d4e7..776a204 100644
--- a/appveyor-macos-x64.yml
+++ b/appveyor-macos-x64.yml
@@ -1,4 +1,4 @@
-image: macos-monterey
+image: macos-bigsur
 
 platform: x64