diff --git a/bypy/macos/__main__.py b/bypy/macos/__main__.py
index bca00451d2..f80fbbf7a2 100644
--- a/bypy/macos/__main__.py
+++ b/bypy/macos/__main__.py
@@ -395,7 +395,7 @@ class Freeze:
                 CFBundlePackageType='APPL',
                 CFBundleSignature='????',
                 CFBundleExecutable='pdftohtml',
-                LSMinimumSystemVersion='10.14.0',
+                LSMinimumSystemVersion='10.15.0',
                 LSRequiresNativeExecution=True,
                 NSAppleScriptEnabled=False,
                 CFBundleIconFile='',
@@ -448,7 +448,7 @@ class Freeze:
             CFBundleExecutable='calibre',
             CFBundleDocumentTypes=docs,
             CFBundleURLTypes=url_handlers,
-            LSMinimumSystemVersion='10.14.0',
+            LSMinimumSystemVersion='10.15.0',
             LSRequiresNativeExecution=True,
             NSAppleScriptEnabled=False,
             NSSupportsAutomaticGraphicsSwitching=True,