diff --git a/appdmg.py b/appdmg.py
index 8c23084..eccba93 100755
--- a/appdmg.py
+++ b/appdmg.py
@@ -78,7 +78,7 @@ icon_locations = {
 #
 # Other color components may be expressed either in the range 0 to 1, or
 # as percentages (e.g. 60% is equivalent to 0.6).
-background = 'resources/macOS_dmg_bkg.tiff'
+background = 'resources/macOS_legacy_dmg_bkg.png'
 
 show_status_bar = False
 show_tab_view = False
diff --git a/buildPy2app.py b/buildPy2app.py
index 4e921c9..2959c87 100755
--- a/buildPy2app.py
+++ b/buildPy2app.py
@@ -17,19 +17,13 @@ DATA_FILES = [
 OPTIONS = {
     'iconfile': 'resources/icon.icns',
     'extra_scripts': 'syncplayServer.py',
-    'includes': {'PySide2.QtCore', 'PySide2.QtUiTools', 'PySide2.QtGui', 'PySide2.QtWidgets', 'certifi', 'cffi'},
-    'excludes': {'PySide', 'PySide.QtCore', 'PySide.QtUiTools', 'PySide.QtGui'},
-    'qt_plugins': [
-        'platforms/libqcocoa.dylib',
-        'platforms/libqminimal.dylib',
-        'platforms/libqoffscreen.dylib',
-        'styles/libqmacstyle.dylib'
-    ],
+    'includes': {'PySide.QtCore', 'PySide.QtUiTools', 'PySide.QtGui', 'PySide.QtWidgets', 'certifi', 'cffi'},
     'plist': {
         'CFBundleName': 'Syncplay',
         'CFBundleShortVersionString': syncplay.version,
         'CFBundleIdentifier': 'pl.syncplay.Syncplay',
-        'LSMinimumSystemVersion': '10.12.0',
+        'LSMinimumSystemVersion': '10.6.8',
+        'LSMaximumSystemVersion': '10.11.6',
         'NSHumanReadableCopyright': 'Copyright © 2019 Syncplay All Rights Reserved'
     }
 }
diff --git a/resources/macOS_legacy_dmg_bkg.png b/resources/macOS_legacy_dmg_bkg.png
new file mode 100644
index 0000000..d41e8cf
Binary files /dev/null and b/resources/macOS_legacy_dmg_bkg.png differ
diff --git a/syncplay/__init__.py b/syncplay/__init__.py
index 613ca26..fc3178a 100755
--- a/syncplay/__init__.py
+++ b/syncplay/__init__.py
@@ -1,5 +1,5 @@
 version = '1.6.3'
 revision = ''
-milestone = 'Yoitsu'
+milestone = 'macOS_legacy'
 release_number = '75'
 projectURL = 'https://syncplay.pl/'