diff --git a/appveyor-macos-x64.yml b/appveyor-macos-x64.yml
index dad2c57..e97d29d 100644
--- a/appveyor-macos-x64.yml
+++ b/appveyor-macos-x64.yml
@@ -1,10 +1,10 @@
-image: macos-bigsur
+image: macos-monterey
 
 platform: x64
 
 init:
-  - chmod +x $HOME/venv3.11/bin/activate
-  - source $HOME/venv3.11/bin/activate
+  - chmod +x $HOME/venv3.12/bin/activate
+  - source $HOME/venv3.12/bin/activate
 
 install:
   - python -m pip install --upgrade pip
diff --git a/macos_build.spec b/macos_build.spec
index 34f6260..abcc2b2 100644
--- a/macos_build.spec
+++ b/macos_build.spec
@@ -63,7 +63,7 @@ app = BUNDLE(
     'CFBundleIdentifier': 'org.earquiz.frequencies',
     'CFBundleShortVersionString': '0.1.7',
     'NSHighResolutionCapable': True,
-    'LSMinimumSystemVersion': '11.0.0',
+    'LSMinimumSystemVersion': '12.0.0',
     'CFBundleDevelopmentRegion': 'en_US',
     'CFBundleDocumentTypes': [{
         'CFBundleTypeName': 'EarQuiz_Frequencies_Audio',