diff --git a/bypy/macos/__main__.py b/bypy/macos/__main__.py
index f2a9bc32f..c6db690f5 100644
--- a/bypy/macos/__main__.py
+++ b/bypy/macos/__main__.py
@@ -441,7 +441,7 @@ def compile_py_modules(self):
         py_compile(join(self.resources_dir, 'Python'))
 
     @flush
-    def makedmg(self, d, volname, format='ULFO'):
+    def makedmg(self, d, volname, format='ULMO'):
         ''' Copy a directory d into a dmg named volname '''
         print('\nMaking dmg...')
         sys.stdout.flush()
diff --git a/docs/changelog.rst b/docs/changelog.rst
index 300fbc019..a77448c9e 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -136,6 +136,8 @@ Detailed list of changes
 
 - When :opt:`shell` is set to ``.`` respect the SHELL environment variable in the environment in which kitty is launched (:pull:`7714`)
 
+- macOS: Bump the minimum required macOS version to Catalina released five years ago.
+
 
 0.35.2 [2024-06-22]
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diff --git a/setup.py b/setup.py
index 3a48fb233..04571907e 100755
--- a/setup.py
+++ b/setup.py
@@ -1588,7 +1588,7 @@ def access(what: str, verb: str = 'would like to access') -> str:
         NSHumanReadableCopyright=time.strftime('Copyright %Y, Kovid Goyal'),
         CFBundleGetInfoString='kitty - The fast, feature-rich, GPU based terminal emulator. https://sw.kovidgoyal.net/kitty/',
         # Operating System Version
-        LSMinimumSystemVersion='10.12.0',
+        LSMinimumSystemVersion='10.15.0',
         # Categorization
         CFBundlePackageType='APPL',
         CFBundleSignature='????',